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Please Explain a Bottleneck and the 78GTX 512mb

post #1 of 12
Thread Starter 
well, i think i might be able to get an Evga 7800GTX 512mb, and im changing my 4 module sticks to 2 1gigers for a higher ram clock, i was wondering how well the card would perform on my overclocked AMD 64 3200+ and if there would be an serious problems,, and would my PSU have enough power for it? currently a 520W, i dont think its a cheap one too. thank you.
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post #2 of 12
Would be important to know what brand and model your PSU is but I think it should be fine, and also there will be a bottleneck but it will still smoke your 6600GT handily lol.
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post #3 of 12
Your psu will probably handle it as long as you don't try to really overclock everything. A 7800gtx is bottlenecked by any cpu available today, but should run just fine on your system.
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post #4 of 12
Thread Starter 
i dont know much about great psu but the company is Athen Power , it says its sata ready and stuff. here is a close link on what it is. but its a little different.

http://www.newegg.com/Product/Produc...82E16817338002
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post #5 of 12
Quote:
Originally Posted by u.c.i.n.e.x.
i dont know much about great psu but the company is Athen Power , it says its sata ready and stuff. here is a close link on what it is. but its a little different.

http://www.newegg.com/Product/Produc...82E16817338002
Most PSUs these days are SATA ready...

Great PSUs are Nuuo and Fortron (aka FSP Group). Both have been around a while, and have great quality PSUs.
post #6 of 12
Quote:
Originally Posted by u.c.i.n.e.x.
well, i think i might be able to get an Evga 7800GTX 512mb, and im changing my 4 module sticks to 2 1gigers for a higher ram clock, i was wondering how well the card would perform on my overclocked AMD 64 3200+ and if there would be an serious problems,, and would my PSU have enough power for it? currently a 520W, i dont think its a cheap one too. thank you.
To answer whether the CPU would bottleneck the GFX would depend on the apps.
For example, your benchmark scores would certainly benefit from a higher CPU speed and would be considered the bottleneck in this application.

However, for newer games at a decent resolution, the bottleneck would almost certainly be the GFX. The higher the res and demand of the game the less and less the CPU speed comes into play as the stress is on the GFX.
On older games, such as Quake 3, the bottleneck is likely to be your CPU as the GFX is way overpowered for the game. However, your GFX is so good that you'll be running such insane FPS that it won't matter.
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post #7 of 12
Thread Starter 
i understand it now, thnx alot peeps
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post #8 of 12
but the thing is about bottle necks is with that amd its very bottlenecked.... compared to say a x2 4200 + or anything else my advice is just to upgrade your cpu and gpu and ull have one hell of a system right at your fingertips
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post #9 of 12
Quote:
Originally Posted by GT!
but the thing is about bottle necks is with that amd its very bottlenecked.... compared to say a x2 4200 + or anything else my advice is just to upgrade your cpu and gpu and ull have one hell of a system right at your fingertips
A 7800GTX wouldn't be bottlenecked even by a 3200+ running at stock speeds, in general. With my GTX I downclocked my CPU from 2.8Ghz to 2.0Ghz and ran a FEAR benchmark; the results were only 2 FPS difference on the average score between 2.8 and 2Ghz. Similar results for all the newest games Eg, NFS:MW, Quake 4, CoD2 all at 1280x1024 res with high settings.
Now install the x1900xt and FEAR benchmarks take a sharp increase. Therefore, the bottleneck here is the GFX-it gave the highest performance increase when upgraded.
If you run the res at say 640x480 (for some reason ) The GFX can easily handle this and the bottleneck with a 3200+ may well switch to the CPU. However, the speed of the FPS would be so massive that it makes no real difference. Either way, having a 3200+ even at stock will produce great results when paired with this GFX.

The CPU speed might come into play when there are lots of players or AI on screen, I haven't really had chance to test this out yet. Obviously a higher CPU speed is better than a lower one. But I've found that as long as you have a decent CPU then it makes hardly any difference to newer games.
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post #10 of 12
I did the same thing the other night, I dropped to stock speeds to see what my temps were (24 max load!!!) and ran 3dmark06, my scores only dropped about 250 points.
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