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#1
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Why is my 7900 GTO clocked faster than the 8800 ?
My 7900 GTO has a core clock of 650 mhz. The typical 8800
at NewEgg is clocked around 576 mhz. My card right now, as old as it is, still sells for over $200. The 8800 GTS is about $250 at CompUSA website. That tells me the 8800 will go under $200 after Christmas. Is there any reason to buy it then ? Also, I notice that the cards with very large memory .. like over 700 megs ... are even slower. Is there an optimum memory size on these new cards ? Is that on-card ram used for anything other than display ? Are there on-card calculations being done, or is it just for higher monitor resolutions ? And then there is the issue of whether a game is cpu ( or dual cpu ) intensive .. or do the newer games benefit from the faster cards ? If a game is mostly pushing the cpu, and the card is merely driving the display, don't we reach a point where card speed is meaningless ? For example, my box is an X2 4600. If I put an 8800 super card in that box, would it improve anything under WinXP ? It almost sounds like the big deal is Dx10 in Vista ... and a Dx10 game card. johns |
#2
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Why is my 7900 GTO clocked faster than the 8800 ?
"johns" wrote in message ... My 7900 GTO has a core clock of 650 mhz. The typical 8800 at NewEgg is clocked around 576 mhz. My card right now, as old as it is, still sells for over $200. The 8800 GTS is about $250 at CompUSA website. That tells me the 8800 will go under $200 after Christmas. Is there any reason to buy it then ? Well, I used to have a 9800 Pro that was clocked a lot lower GPU/Memory wise that a 9600XT. But it' had double the pipelines and a 256bit memory bus, while the 9600XT was 128bit. It had almost double the performance in games. It's not about sheer Mhz, but numbers of pipelines, shaders and GPU architecture as well as memory bus width. An 8800GTX GPU runs at 575Mhz....but there's way more to it than this. |
#3
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Why is my 7900 GTO clocked faster than the 8800 ?
I'm sure there is, but I remember clearly that
the 9800 Pro gave much deeper colors and finer detail than almost any card since. I think the only reason the faster cards became acceptable is that LCD screens are somewhat grainy anyway, so upping the speed and outputting lower quality video can't be seen. And then came the overclocking to up the FPS needed by newer action games loaded with on-screen characters and active environs. More pipelines gave us that, but did it give more than merely a faster display? I notice that the 8800 owners are not seeing a great improvement in Crysis over my 7900 GTO .... other than Dx10 in Vista. Is this a ploy to sell Vista to gamers ? And what are we getting ? johns |
#4
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Why is my 7900 GTO clocked faster than the 8800 ?
johns wrote:
My 7900 GTO has a core clock of 650 mhz. The typical 8800 at NewEgg is clocked around 576 mhz. My card right now, as old as it is, still sells for over $200. The 8800 GTS is about $250 at CompUSA website. That tells me the 8800 will go under $200 after Christmas. Is there any reason to buy it then ? Only you can say if that card meets your needs and your budget. Also, I notice that the cards with very large memory .. like over 700 megs ... are even slower. Is there an optimum memory size on these new cards ? No, and your premise is false! Cards with more video ram are not, as a rule, slower than cards with less, all other things similar. There are natural "powers of 2" points of convention. Is that on-card ram used for anything other than display ? Are there on-card calculations being done, or is it just for higher monitor resolutions ? You can do anything you want with the GPU subsystem if you follow the SDK, even if it won't be done well. There are many "off label" ideas for GPUs in use now, google is your friend. Nearly everything ends up in video ram somehow, all manners of results of calculations, FSAA, texture filterings, the frame buffer, stencil shadows, z-buffering, you name it. Surprisingly modest games can eat up a large amount of video ram. And then there is the issue of whether a game is cpu ( or dual cpu ) intensive .. or do the newer games benefit from the faster cards ? If a game is mostly pushing the cpu, and the card is merely driving the display, don't we reach a point where card speed is meaningless ? For example, my box is an X2 4600. If I put an 8800 super card in that box, would it improve anything under WinXP ? It almost sounds like the big deal is Dx10 in Vista ... and a Dx10 game card. johns This is why we read review sites that benchmark games and answer these broad topics specifically, since you can't predict game performance until you actually bench it, no matter who says otherwise, even the developers can only guess within certain "performance buckets" of how any given machine class will respond. Budem zdorovy! |
#5
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Why is my 7900 GTO clocked faster than the 8800 ?
"johns" wrote in message ... And then there is the issue of whether a game is cpu ( or dual cpu ) intensive .. or do the newer games benefit from the faster cards ? If a game is mostly pushing the cpu, and the card is merely driving the display, don't we reach a point where card speed is meaningless ? For example, my box is an X2 4600. If I put an 8800 super card in that box, would it improve anything under WinXP ? It almost sounds like the big deal is Dx10 in Vista ... and a Dx10 game card. johns Well I had a ATI x1950 pro card in my machine and yesterday I put a XFX 8800 GT in this machine and the desktop is now much sharper and colours much nicer on the desktop than it was with the ATI card. As for game performance this 8800 leaves the ati card in the dust. |
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