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#1
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GA-EX58-UD4P memory question
I ordered Kingston HyperX 1GB KHX16000D3K3/3GX (DDR3 2000) x3 according to
the mfg's QVL along with my UD4P motherboard. My problem is that the motherboard (with F8 BIOS) sets the memory frequency to 1066 by default...rather than 2000. My system is very stable here...no BSOD. But whenever I set the BIOS to the appropriate memory/timing/voltage speed (2000)...I get regular occuring blue screens in 32bit Vista Ultimate. Am I asking too much for this memory to work at the rated speed in this motherboard??? |
#2
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GA-EX58-UD4P memory question
James wrote:
I ordered Kingston HyperX 1GB KHX16000D3K3/3GX (DDR3 2000) x3 according to the mfg's QVL along with my UD4P motherboard. My problem is that the motherboard (with F8 BIOS) sets the memory frequency to 1066 by default...rather than 2000. My system is very stable here...no BSOD. But whenever I set the BIOS to the appropriate memory/timing/voltage speed (2000)...I get regular occuring blue screens in 32bit Vista Ultimate. Am I asking too much for this memory to work at the rated speed in this motherboard??? http://www.valueram.com/datasheets/KHX16000D3K3_3GX.pdf You could try "sneaking up on it". Experiment with ever higher settings, to see how far it will go. At those speeds, you're in "tweak country". Use the full 1.65V, to give the memory as much assistance as possible. (1.65V is the Intel stated limit, and other people have other opinions.) To a small extent, the max memory speed will be determined by your processor, as the memory controller is built-in to the processor on Core i7. Intel has tested and guaranteed some lower value for the speed, so who knows whether every processor will push three channels at DDR3-2000. For example, this table shows DDR3-1066 as the test point. Running at DDR3-2000 is a fair leap above 1066. http://www.intel.com/products/proces...ifications.htm Paul |
#3
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GA-EX58-UD4P memory question
"Paul" wrote in message:
http://www.valueram.com/datasheets/KHX16000D3K3_3GX.pdf You could try "sneaking up on it". Experiment with ever higher settings, to see how far it will go. At those speeds, you're in "tweak country". Use the full 1.65V, to give the memory as much assistance as possible. (1.65V is the Intel stated limit, and other people have other opinions.) To a small extent, the max memory speed will be determined by your processor, as the memory controller is built-in to the processor on Core i7. Intel has tested and guaranteed some lower value for the speed, so who knows whether every processor will push three channels at DDR3-2000. For example, this table shows DDR3-1066 as the test point. Running at DDR3-2000 is a fair leap above 1066. http://www.intel.com/products/proces...ifications.htm Paul Thanks for the info. I will try your suggestion...and stay at or below 1.65V in the process. But I'm trying something a little different right now. I've up'd the base clock to 150MHz and set the memory mult. to 10 (1500MHz memory freq.)...and no BSOD as yet. Pretty amazing. Better Passmark scores. But it has only been a couple of hours. I'll leave it run all night tonight with these settings. Sheesh, it's getting warm in this room right now! ;c) -james (BTW, this is my first Gigabyte mb. I've been an Asus man for the last 15 years. In fact, I almost bought the P6T Deluxe V2, but a friend talked me into the Gigabyte board...he said "I wouldn't regret it") GA-EX58-UD4P w/ i7 920 3GB Kingston PC3 16000 triple channel Sapphire 4850 X2 1GB Video Card Corsair 620 HX Power supply |
#4
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GA-EX58-UD4P memory question
James wrote:
"Paul" wrote in message: http://www.valueram.com/datasheets/KHX16000D3K3_3GX.pdf You could try "sneaking up on it". Experiment with ever higher settings, to see how far it will go. At those speeds, you're in "tweak country". Use the full 1.65V, to give the memory as much assistance as possible. (1.65V is the Intel stated limit, and other people have other opinions.) To a small extent, the max memory speed will be determined by your processor, as the memory controller is built-in to the processor on Core i7. Intel has tested and guaranteed some lower value for the speed, so who knows whether every processor will push three channels at DDR3-2000. For example, this table shows DDR3-1066 as the test point. Running at DDR3-2000 is a fair leap above 1066. http://www.intel.com/products/proces...ifications.htm Paul Thanks for the info. I will try your suggestion...and stay at or below 1.65V in the process. But I'm trying something a little different right now. I've up'd the base clock to 150MHz and set the memory mult. to 10 (1500MHz memory freq.)...and no BSOD as yet. Pretty amazing. Better Passmark scores. But it has only been a couple of hours. I'll leave it run all night tonight with these settings. Sheesh, it's getting warm in this room right now! ;c) -james (BTW, this is my first Gigabyte mb. I've been an Asus man for the last 15 years. In fact, I almost bought the P6T Deluxe V2, but a friend talked me into the Gigabyte board...he said "I wouldn't regret it") GA-EX58-UD4P w/ i7 920 3GB Kingston PC3 16000 triple channel Sapphire 4850 X2 1GB Video Card Corsair 620 HX Power supply Do you double check with CPUZ ? DDR3-2000 should show a 1000MHz clock (you have to multiply the CPUZ value by two, as a rule). http://www.cpuid.com/cpuz.php Example here, of some DDR3-2000 and CPUZ. http://www.guru3d.com/article/ocz-bl...emory-review/7 Paul |
#5
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GA-EX58-UD4P memory question
The answer to this is surprisingly simple.
There is no Jedec standard for speeds above 1066MHz. By default, the board reads the Jedec standard information from the SPD ROM on the memory chip, which gives the 1066 speed, and that's the way it runs. By default. Recognizing that this is industrial strength stupid, Intel and the memory makers created a non Jedec standard called XMP. Somewhere in your BIOS settings there is a place to enable XMP. Presto chango, it's like magic, and now your system will run .... RELIABLY .... at 1600MHz. DO NOT change anything else or set your timings manually (at least not initially). Just turn on XMP and all will be well. Later, if you want to try overclocking from there (at a very high risk of reduced stability), you can have at it. But it's likely that turning on XMP will do all that you want. James wrote: I ordered Kingston HyperX 1GB KHX16000D3K3/3GX (DDR3 2000) x3 according to the mfg's QVL along with my UD4P motherboard. My problem is that the motherboard (with F8 BIOS) sets the memory frequency to 1066 by default...rather than 2000. My system is very stable here...no BSOD. But whenever I set the BIOS to the appropriate memory/timing/voltage speed (2000)...I get regular occuring blue screens in 32bit Vista Ultimate. Am I asking too much for this memory to work at the rated speed in this motherboard??? |
#6
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GA-EX58-UD4P memory question
"Barry Watzman" wrote in message:
The answer to this is surprisingly simple. There is no Jedec standard for speeds above 1066MHz. By default, the board reads the Jedec standard information from the SPD ROM on the memory chip, which gives the 1066 speed, and that's the way it runs. By default. Recognizing that this is industrial strength stupid, Intel and the memory makers created a non Jedec standard called XMP. Somewhere in your BIOS settings there is a place to enable XMP. Presto chango, it's like magic, and now your system will run .... RELIABLY .... at 1600MHz. DO NOT change anything else or set your timings manually (at least not initially). Just turn on XMP and all will be well. Later, if you want to try overclocking from there (at a very high risk of reduced stability), you can have at it. But it's likely that turning on XMP will do all that you want. Thank you Barry. But this too brings on the BSOD. The BIOS refers to this as "Xtreme Memory Profile." It basically allows me two settings called profile 1 and profile 2. Profile 1 takes me to a memory frequency of 2002MHz with the appropriate voltage and timing. Profile 2 takes me to 1867MHz which also brings about the dredded BSOD. And it does this with my base clock set to the default 133MHz. Essentially, everything is set to BIOS defaults except XMP. For whatever reason(s), my system will not allow me to use the XMP profiles without becoming unstable. I'm not sure what to blame here...memory or motherboard, as both are new and I don't have any other memory to substitute. What would you do? Should I exchange the memory...or the motherboard? The reason I ask is because now is the time to do this. I have only had the new hardware for less than a week and Newegg will only allow exchanges within a small window of time. Just a note about my trial of the base clock set to 150 and the memory multiplier set to 10x. The machine ran all of last night without incident. I.e., the machine never rebooted and appeared to be working fine when I got up this morning. james |
#7
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GA-EX58-UD4P memory question
"Paul" wrote in message:
Do you double check with CPUZ ? DDR3-2000 should show a 1000MHz clock (you have to multiply the CPUZ value by two, as a rule). http://www.cpuid.com/cpuz.php Example here, of some DDR3-2000 and CPUZ. http://www.guru3d.com/article/ocz-bl...emory-review/7 Paul CPUID shows 750MHz right now. That's because I'm running at 1500MHz. But the timing matches the XMP profiles with the exception of tRC being at 24 instead of 42 or 45. I could try setting tRC to match and then see how it affects the Passmark score. But like I said, the system is running flawlessly (for 17 hours now) with the current base clock at 150. I'm going to try pushing this a little bit more in time. But I may have to buy a different heat sink for the CPU if I want to get 3.8GHz to 4.1GHz. My current CPU temps (at 3.0GHz) are running around 53 degrees C at idle. As for the memory, I'm not sure why it won't run reliably at 2000. I paid extra for these because of that. I'm thinking about exchanging them. Unfortunately, these are the only triple channel modules that the motherboard QVL says will work at 2000Mhz. james |
#8
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GA-EX58-UD4P memory question
Are you trying to overclock? I don't have enough information about your
system to make a suggestion, but if you are trying to overclock, you will get no sympathy from me. However, for the purposes of this discussion, I do not consider using XMP mode to be ovclocking (as long as all of the other speeds are on spec and not overclocked). James wrote: "Paul" wrote in message: Do you double check with CPUZ ? DDR3-2000 should show a 1000MHz clock (you have to multiply the CPUZ value by two, as a rule). http://www.cpuid.com/cpuz.php Example here, of some DDR3-2000 and CPUZ. http://www.guru3d.com/article/ocz-bl...emory-review/7 Paul CPUID shows 750MHz right now. That's because I'm running at 1500MHz. But the timing matches the XMP profiles with the exception of tRC being at 24 instead of 42 or 45. I could try setting tRC to match and then see how it affects the Passmark score. But like I said, the system is running flawlessly (for 17 hours now) with the current base clock at 150. I'm going to try pushing this a little bit more in time. But I may have to buy a different heat sink for the CPU if I want to get 3.8GHz to 4.1GHz. My current CPU temps (at 3.0GHz) are running around 53 degrees C at idle. As for the memory, I'm not sure why it won't run reliably at 2000. I paid extra for these because of that. I'm thinking about exchanging them. Unfortunately, these are the only triple channel modules that the motherboard QVL says will work at 2000Mhz. james |
#9
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GA-EX58-UD4P memory question
"Barry Watzman" wrote in message :
Are you trying to overclock? I don't have enough information about your system to make a suggestion, but if you are trying to overclock, you will get no sympathy from me. However, for the purposes of this discussion, I do not consider using XMP mode to be ovclocking (as long as all of the other speeds are on spec and not overclocked). Hi Barry, my point is that these (QVL approved) 1GB Kingston DDR3 2000 are junk! They will NOT run at XMP speeds on *my* GA-EX58-UD4P with all other BIOS settings at their default. I get bluescreens using either profile. If you look on Newegg, you will see similar complaints. As for overclocking...I'm not looking for sympathy. I know the risks. James |
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