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#1
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[GA-EP35C-DS3R] default Memory speed shown in BIOS is not correct
Hi everyone,
I just build my new PC with the GA-EP35C-DSR MB, and so far, so good The only thing thar bothers me is that I installed 2 * 2Go of DDR2 memory (sold together, under the brand "black dragon (GEIL)"). This is supposed to be PC 8500 memory. This is waht is written on the box, and on the shiny stickers that are on the sticks themselves. So, I gather that the BIOS shoudl show a default speed of 1066MHz, am I right. Well, it says that my memory is 800MHz memory. I flashed the BIOS to F3 version, and I checked with EasyTune (don't know why it would be different, buyt anyway). It still shows 800MHz. I tested the memory for several hours with memtest. The sticks seem to work ok. Before I call the shop where I bought it, I would like to hear from this NG about anytging I could have ommitted or misunderstood. The simplest explaination, for the moment, is that there are false information of both the box and the stickers of the memory sticks I bought. Looking forward for your answers. Thanks for reading. Huey |
#2
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[GA-EP35C-DS3R] default Memory speed shown in BIOS is not correct
Hueyduck wrote:
Hi everyone, I just build my new PC with the GA-EP35C-DSR MB, and so far, so good The only thing thar bothers me is that I installed 2 * 2Go of DDR2 memory (sold together, under the brand "black dragon (GEIL)"). This is supposed to be PC 8500 memory. This is waht is written on the box, and on the shiny stickers that are on the sticks themselves. So, I gather that the BIOS shoudl show a default speed of 1066MHz, am I right. Well, it says that my memory is 800MHz memory. I flashed the BIOS to F3 version, and I checked with EasyTune (don't know why it would be different, buyt anyway). It still shows 800MHz. I tested the memory for several hours with memtest. The sticks seem to work ok. Before I call the shop where I bought it, I would like to hear from this NG about anytging I could have ommitted or misunderstood. The simplest explaination, for the moment, is that there are false information of both the box and the stickers of the memory sticks I bought. Looking forward for your answers. Thanks for reading. Huey Each DIMM has a tiny SPD EEPROM chip on it. The SPD chip contains timing tables. There are two options for the manufacturer. The SPD table can be set up, to contain the "overclocked" values (the advertised values) for the product. But if such a DIMM is plugged into an average motherboard, it may cause the motherboard not to start. To fix it, the DIMM manufacturer puts a "safe" setting in the SPD. In your case, that might be DDR2-800 settings. Then, it is up to the user, to manually enter the DDR2-1066 clock and timing values into the BIOS. That reduces the number of tech support phone calls received, as most users get their motherboards to work. And the technically savvy users, dial in the correct settings manually. It is not dishonesty, as much as an attempt to reduce the number of tech support phone calls, and requests for RMA. Here, you see a DDR2 DIMM, that has three timing tables. The SPD chip supports DDR2-400, DDR2-533, and DDR2-667. Now, it could be, that the product has printed on the box, that it supports more speed. You'd need to enter the details printed on the box, in place of the types of values shown here by default in the SPD. Generally, looser timings (higher CAS etc) are used at the elevated clock speeds. http://farm4.static.flickr.com/3282/...aaed713d_o.png It looks possible, that the timings are 5-5-5-15, with no value stated for tRC. You could leave tRC at Auto if you want, and let the BIOS work it out. The modules are rated at a high value of Vdimm, but I would not apply 2.4V as a long term voltage to my modules. Use only as much voltage as is needed for stability. Somewhere between 2.0 and 2.2V for example. Test with memtest86+ before you boot into Windows - if the RAM is not manually dialled in correctly, your Windows boot disk will get corrupted. (Make a backup of the bootdisk, while the RAM is at a lower stable setting, so you're prepared for the worst - I use a Linux LiveCD for initial boot testing, because a CD cannot be harmed by an overclocking type failure. Only boot to Windows, if you're absolutely sure the memory is error free.) http://www.newegg.com/Product/Produc...82E16820144242 The Geil site is perfectly useless, a waste of electrons. http://www.geil.com.tw/products/showSpec/id/118 Paul |
#3
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[GA-EP35C-DS3R] default Memory speed shown in BIOS is not correct
Paul a écrit :
Each DIMM has a tiny SPD EEPROM chip on it. The SPD chip contains timing tables. Hi, Paul. There are two options for the manufacturer. The SPD table can be set up, to contain the "overclocked" values (the advertised values) for the product. But if such a DIMM is plugged into an average motherboard, it may cause the motherboard not to start. To fix it, the DIMM manufacturer puts a "safe" setting in the SPD. In your case, that might be DDR2-800 settings. Then, it is up to the user, to manually enter the DDR2-1066 clock and timing values into the BIOS. That reduces the number of tech support phone calls received, as most users get their motherboards to work. And the technically savvy users, dial in the correct settings manually. It is not dishonesty, as much as an attempt to reduce the number of tech support phone calls, and requests for RMA. This sounds dishonnest to me. Any normal person won't mess with the BIOS juste in order to get his memory running at the nominal speed. Anyway, I do not want to have to overclock something in my PC. This is too much hazardous for a workstation. I found this thread: http://forums.overclockers.co.uk/sho...php?p=12289158 And now, I don't know what to think. Tomorrow, I'll go and check the sticks in the shop where I bought it. They say they will test it. Here, you see a DDR2 DIMM, that has three timing tables. The SPD chip supports DDR2-400, DDR2-533, and DDR2-667. Now, it could be, that the product has printed on the box, that it supports more speed. You'd need to enter the details printed on the box, in place of the types of values shown here by default in the SPD. Generally, looser timings (higher CAS etc) are used at the elevated clock speeds. http://farm4.static.flickr.com/3282/...aaed713d_o.png CPU-Z clearly states that my modules are PC2-6400 (400MHz). It looks possible, that the timings are 5-5-5-15, with no value stated for tRC. You could leave tRC at Auto if you want, and let the BIOS work it out. The modules are rated at a high value of Vdimm, but I would not apply 2.4V as a long term voltage to my modules. Use only as much voltage as is needed for stability. Somewhere between 2.0 and 2.2V for example. Thanks you for your advice, but as I said, I do not want to eneter an overclocking procedure. I want my hardware to run at its nominal speed. Nothing more, nothing less. Thanks you for explaining all this to me. This was very detailed. And it allowed me to discover CPU-Z, btw :-) The Geil site is perfectly useless, a waste of electrons. Seems like their product might not be the best. I did'nt know this brand. Last time I buy that . Why the shop would tell me that they were better that corsair, I do not know. Thanks again. Huey |
#4
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[GA-EP35C-DS3R] default Memory speed shown in BIOS is not correct
Paul a écrit :
Each DIMM has a tiny SPD EEPROM chip on it. The SPD chip contains timing tables. There are two options for the manufacturer. The SPD table can be set up, to contain the "overclocked" values (the advertised values) for the product. But if such a DIMM is plugged into an average motherboard, it may cause the motherboard not to start. Well, after a bit of research, I found something that might indicate that it is also a motherboard issue. Here's a post I found he (read 08-01-2008 @ 23h07'04) http://forum.hardware.fr/hfr/Hardwar...t_788214_1.htm Translated from french, it goes like this: [/quote] "In order to insure compatibility, motherboards follow JEDEC specifications, which allow to assemble é boot a PC in a reliable way. This JEDEC norm ignores DDR2 that goes higher than PC6400/800Hz. So if the BIOS memory setting is set to "default", every module with a speed equal or higher than 800MHz will show ac being PC6400. For seome brands (including Crucial), ther is an additionnal norm name EPP (enhanced performance profile) wich give the timing one has to manually set in the BIOS in order to enjoy the real performance of these modules. These specifications appear in CPU-Z or Everest. Intel Chipset do *not* recognize EPP profiles. nVidia chipset *do*. The best thing is to chose frequency ande ratio manually in the BIOS, and, if necessary, chose the Vdimm value specified by the vendor. This is true for all the Motherboards with an Intel Chipset that deals with DDR2. [/quote] So, you see, Paul, with your explanations and this one , I finally decided to try the simple tool that is given with the EP35c-DS3R, and wich is called easyTune5. I just set the memory to 1066MHz. Rebooted. Works fine. I will perform a MEMtest tonight/ Anyway, all this seesm a bit strange. CPU-Z still shows my memeory as "PC-6400". Is it possible that this "PC-6400" is entirely made up by the motherboard, due to JEDEC limitations? I wonder. Huey |
#5
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Memory gives errors when turned to nominal speed- was [GA-EP35C-DS3R]default Memory speed shown in BIOS is not correct
Hi everyone,
This afternoon, I changed the speed of my 2 modules of memory, in order for them to run at the speed I bought them for. I let Easy Tune do automatic settings. Tonight, I checked the stability of the memory with memtest: errors all over the place. With a speed of 800MHz onstead of the nominal 1066MHz, there was no errors. Shall I assume that my two modules cannot support the settings that are advertized on the box?This *is* annoying. This is annoying because I have no way to find the setting that would insure zero errors with my two modules at 1066MHz. I can try, but I cannot be assured. What do you think? I think I'll bring them sticks to the shop and try another brand. Any advice is welcome. Huey. |
#6
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Memory gives errors when turned to nominal speed- was [GA-EP35C-DS3R]default Memory speed shown in BIOS is not correct
Hueyduck wrote:
Hi everyone, This afternoon, I changed the speed of my 2 modules of memory, in order for them to run at the speed I bought them for. I let Easy Tune do automatic settings. Tonight, I checked the stability of the memory with memtest: errors all over the place. With a speed of 800MHz onstead of the nominal 1066MHz, there was no errors. Shall I assume that my two modules cannot support the settings that are advertized on the box?This *is* annoying. This is annoying because I have no way to find the setting that would insure zero errors with my two modules at 1066MHz. I can try, but I cannot be assured. What do you think? I think I'll bring them sticks to the shop and try another brand. Any advice is welcome. Huey. Does Easytune change the Vdimm setting ? It probably does not. You have forgotten to adjust the Vdimm in the BIOS. Once you do that, the errors could disappear. On my motherboards here, I usually have to set some BIOS setting to "Manual", to expose the memory timing settings. (On Gigabyte, the detailed settings are hidden until you press control F1.) Once the detailed settings are available, set the four parameters (the 5-5-5-15 part) in the BIOS. Set the memory clock so that the memory is running at DDR2-1066 (or whatever the setting is that the motherboard happens to support). The motherboard will have an upper limit, as to what that speed may be. In some cases, only overclocking the CPU, makes available the very highest settings. CPUZ can be used to verify the current operating conditions for the RAM. Make sure the operating conditions match the ones listed on the Geil site (DDR2-1066 5-5-5-15). It sounds like Easytune has set the speed for you, but may not have adjusted the memory voltage. The Geil web page says the Vdimm "working" voltage is 2.2V to 2.4V. The JEDEC standard value is 1.8V. Use only as much voltage as is needed to stop the errors. You can start at 2.2V, and work down a step at a time, and in each case, use a memtest86+ floppy for memory testing. I would not recommend 2.4V for long term usage. If you can do one complete pass of memtest86+ at a given voltage, keep adjusting the voltage, until you see what the sensitive point is. Then give it an extra step of voltage, before moving to another test. (Like booting a Linux LiveCD and running Prime95, before you boot back into Windows.) When using highly elevated voltage for DIMMs, and when using four DIMMs with fat heat spreaders on them, sometimes there is no room for air movement between the DIMMs. The result can be high operating temperatures for the RAM. Since it sounds like you're using only two sticks, I'm less worried about the temperature. But you should still avoid using extremely high voltage values over the long term, because it could result in a memory failure at some future date. HTH, Paul |
#7
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Memory gives errors when turned to nominal speed- was [GA-EP35C-DS3R]default Memory speed shown in BIOS is not correct
Paul a écrit :
Does Easytune change the Vdimm setting ? It probably does not. You are right: it doesnot. You have forgotten to adjust the Vdimm in the BIOS. Once you do that, the errors could disappear. I've got something weirder since yesterday: I made a bootable CD with memtest86 on it, in order to follow your advice. I set the memory to 1066MHz (speed that should be shown) instead of the default BIOS setting of 800MHz. I did'nt change the Vdimm. memtest86 ran @700% without finding an error. Under windows, all the instances I had to open to cover the memory where finding errors like mushrooms in a meadow. How is that possible, I wonder. Btw, I seem to understand that a 100% test done by memtest86 is more reliable than 200 or 300% test under windows. Under windows, memetest recommend to run the application at least 20 minutes. Under Dos, when it's finished, it's finished. I like that. On my motherboards here, I usually have to set some BIOS setting to "Manual", to expose the memory timing settings. (On Gigabyte, the detailed settings are hidden until you press control F1.) Once the detailed settings are available, set the four parameters (the 5-5-5-15 part) in the BIOS. Set the memory clock so that the memory is running at DDR2-1066 (or whatever the setting is that the motherboard happens to support). The motherboard will have an upper limit, as to what that speed may be. In some cases, only overclocking the CPU, makes available the very highest settings. CPUZ can be used to verify the current operating conditions for the RAM. Make sure the operating conditions match the ones listed on the Geil site (DDR2-1066 5-5-5-15). It sounds like Easytune has set the speed for you, but may not have adjusted the memory voltage. The Geil web page says the Vdimm "working" voltage is 2.2V to 2.4V. Yes I saw that. As I sais, I am a OC virgin and I was intending to stay so I didn't even know that. The JEDEC standard value is 1.8V. Use only as much voltage as is needed to stop the errors. You can start at 2.2V, and work down a step at a time, and in each case, use a memtest86+ floppy for memory testing. For the moment, the memory runs at 1.95V. I will test it some more. It bothers me that the errors found unedre windows memetest would not be reproductible under DOS, though. Could a bad manipulation make memtest report memory errors? (for instance if I had launched mem test while small programs where running or opened in the background). I would not recommend 2.4V for long term usage. If you can do one complete pass of memtest86+ at a given voltage, keep adjusting the voltage, until you see what the sensitive point is. Then give it an extra step of voltage, before moving to another test. (Like booting a Linux LiveCD and running Prime95, before you boot back into Windows.) whoo, I'll look into that. Nice way to introduce me to LInux. I'll search the ISO. When using highly elevated voltage for DIMMs, and when using four DIMMs with fat heat spreaders on them, sometimes there is no room for air movement between the DIMMs. The result can be high operating temperatures for the RAM. Since it sounds like you're using only two sticks, I'm less worried about the temperature. But you should still avoid using extremely high voltage values over the long term, because it could result in a memory failure at some future date. And I don't want that. Last question if you do'nt mind: Geil site specifies 2.2 to 2.4V for the modules. If the memtest i happy with a lower tension (like the one I have now wich is 1.95V I think), shall I up it to 2.2V anyway? Logically, yes, since it is the default lower voltage. But, again, I woudl have thoug Thank you so much, Paul for all those explaination. Huey |
#8
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(ATT Tim) [GA-EP35C-DS3R] default Memory speed shown in BIOSis not correct
Hi everyone,
Just wanted to update one last time this thread. So, the GEIL memory modules where simply either - defective or - not compatible with the EP35C-DSR motherboard. I brought them back not because they where detected as PC6400 instead of PC8500, since this is normal and dur to JEDEC compliance from the motherboard. But, when I was clocking the modules to their nominal speed and setting their voltage to the recommended value, memtest wouldn't stop detecting errors. I changed the modules for g.skill ones. ref F2-8500-CL5D-4GBPK DDR2-1066 PC2-8500 2048MB*2 CL5-5-15 2.0 to 2.1V On the site of the brand, you can find a pdf with screen captures of many BIOS from the boards that have been tested. I set the frenquency to 1066MHz, upped the voltage from +0.2V (it now reads something between 2.0 and 2.1), and tested it -memtest86 from a bootable CDrom: 200% coverage= no error -memtest under winXPSP2: all night long= no error. Thank you for having helped me with this problem. (ATT Tim) I do think that your modules are simply not compatible with your motherboard. g.skill site specifies exactly what motherboard they tested with each of their module kit. You might want to take a look. Huey |
#9
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(ATT Tim) [GA-EP35C-DS3R] default Memory speed shown in BIOSis not correct
ANd btw, there I checked my new modules (g.skill) with CPU-Z.
I went to the SPD tab. In the timing table, there are 3 possible settings recorded: JEDEC1= 266MHz JEDEC2=400Mhz (my previous modules were only showing frequency as high as this one) end EPP1= 533MHz ANd they are the ones who , indeed, work nicely, even if they are really hot. Huey |
#10
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(ATT Tim) [GA-EP35C-DS3R] default Memory speed shown in BIOS is not correct
"Hueyduck" wrote in message ... ANd btw, there I checked my new modules (g.skill) with CPU-Z. I went to the SPD tab. In the timing table, there are 3 possible settings recorded: JEDEC1= 266MHz JEDEC2=400Mhz (my previous modules were only showing frequency as high as this one) end EPP1= 533MHz ANd they are the ones who , indeed, work nicely, even if they are really hot. Huey Hi there, Reading the Cosair forum I believe you are right and have RMA'd them and ordered OCZ memory which according to the Gigabyte compatibility sheet should be compatible. We shall see if it runs at 1333 without a problem. Many thanks for the pointers, Tim. |
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