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Pci-Express Compatibility Issue

S

Sybila

Junior Member
Hello everyone,
I want to buy the new Gtx 760 from Nvidia but the big issue is that my motherboard doesn't allow pci-express 3.0 and even after 2 days of reading I don't know if this card is going to use all the bandwidth of the 3.0 pci so if I connect it to my actual motherboard it will be a waste of money or it will use only a bit more of the 1.1 pci standard so in some high-end games I will lose some fps until I renew my setup
Actual one is:
Intel quad core q 6600 @2'4
6gb of ram at 800 MHz
Asus p5ke wifi ap (chipset p35)
Actual graphic card is Nvidia gtx 8800

Thank you for your help and anything you need just ask...I'm really interested in learning about this.
 
To help you figure this out, first know that the specs for PCI-E 2.0 state 500 MB/s per lane which is 8,000 MB/s in a 16x slot. PCI-E 3.0 is 985 MB/s per lane or 16,000 MB/s in a x16 slot. Just about any video card you'll want is faster than those numbers.

Thus your first area of concern is do you have anything in your system capable of 8,000 MB/s! Your hard drive for sure can't get it to the video card that fast. However, DDR3 ram (DDR3-1600) is 12,800 MB/s. This means you'll need a game that loads all its textures into system RAM and never touches the hard drive thereafter. Also, it is desirable to load all the graphics (textures) straight to the video card and bypass the slower RAM.

But ... big but ... the CPU sometimes is so busy processing game related activities that it can't pull things out of your RAM (and hand it to the video card) at those speeds because the game is not optimized, blah blah. The point is ... if PCI-E 2.0 is not good enough for you ... what in the world are you running!?!?
 
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Thank you for the answer but still not getting to the point of understanding if the bottleneck will be huge or just little...sorry
 
Good...for example...Crysis 3 and battlefield 3 maximum specs I can with my comp...will the lose be noticeable?
 
Ajamm...so you are telling me, that the factor that will limit my playability in terms of fps will be the CPU.Now I understand...will it be very tragic? Jejeje
 
Is your Q6600 OC'd at all? Can it be?

I believe at this point new games are going to be held back a bit by the ol' P35. You can probably find some benches that will give you an idea of how much.

BF3 multiplayer in particular is almost always CPU starved more than GPU starved. The more CPU you can give it, the better, at least according to the numbers.
 
I still need some help in the looking for benchs and maybe confirming everything said above. Anyone? Should I buy another cooler or is it ok with mine? Thank you
 
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