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PCIe 2.0 and PCIe 3.0

Last response: in Graphics & Displays
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December 11, 2012 3:40:33 PM

I'm having Asus P8Z68-V PRO with a Intel Core i5-2500K, 8 GB DDR3 RAM @ 1600. Overclocking is not done.

Currently I'm having single XFX Radeon HD 4870. But it got corrupt due to some voltage problem. Now I'm planning to purchase a new Graphics card.

I need some points to be clarified.

Suppose I install PCIe 3.0 card over PCIe 2.0 slot, what exact difference will it make in terms of the clock (core/memory) speed, memory bandwidth etc. I know the card will perform slower but what and how much in technical terms.

My motherboard supports only PCIe 2.0 in quad SLI/Crossfire.

Suppose I plan to get GTX560Ti (PCIe2.0) or GTX 650Ti (PCIe3.0), which will give me better performance.
By specifications, GTX650Ti is better but will it be the same on PCIe 2.0 slot? What exact things will work at lower speed and how much lower?

I do not want to upgrade motherboard or processor or any other thing. Just GPU. PSU will be upgraded too to 850W may be corsair.

Also not interested in ATI cards as they run too hot and cause trouble in very hot and humid climate where I live.
Can anyone suggest a best possible NVIDIA GPU with brand or exact model name on the above setup?

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a b U Graphics card
December 11, 2012 3:44:17 PM

hi, well on my personal experience i run a gtx 670 on a 4 years old i7 dell stock motherboard, with only 2.0 pci port, and the performance its great, whenever i run a game the card its always working at its top speed when its needed, and comparing my benchmark results with other gtx 670 users im always on the same average results as they are, and when i overclocked it it was almost on pair with a gtx 680. hope it helps.
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a b U Graphics card
December 11, 2012 3:58:45 PM

It will run perfectly fine in PCIe 2.0, the difference between PCIe 2.0 and and PCIe 3.0 are not too different it may vary by a couple of fps.

Though you might consider another GPU such as GTX 660, it gives you way better performance and you won't be paying much more. You could get those Money from the overkill PSU you're buying, just step it Down a bit. ;) 
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a b U Graphics card
December 11, 2012 4:05:15 PM

First of all, a 560ti is a far faster vidcard than a 650ti!
The GTX 660 is similar to 560ti, but a 660ti is even faster.
I too will use only nVidia (simply because ATI software is so bad).
A 670 is very expensive.
Sure I want one myself but not gonna happen anytime soon...
A 660 is a good card.
660ti is faster but starting to get expensive.
Re: PCIe 3.0 vs. PCIe 2.0, no big deal.
The PCIe 3.0 vidcard will work just fine in PCIe 2.0 motherboard.
There will be no change in the vidcard's spec, regardless of its installation slot.
Regards
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a b U Graphics card
December 11, 2012 5:01:30 PM

There will be NO DIFFERENCE in performance when going from a PCI-e 2.0 to 3.0 slot because current gpus still can't fully utilize the bandwidth of a PCI-e 2.0 x16 slot.
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December 11, 2012 5:03:41 PM

No difference! There are only few gpu-s that can reach bandwith of 2.0!
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a b U Graphics card
December 11, 2012 5:18:09 PM

The_OGS said:
First of all, a 560ti is a far faster vidcard than a 650ti!
The GTX 660 is similar to 560ti, but a 660ti is even faster.
I too will use only nVidia (simply because ATI software is so bad).
A 670 is very expensive.
Sure I want one myself but not gonna happen anytime soon...
A 660 is a good card.
660ti is faster but starting to get expensive.
Re: PCIe 3.0 vs. PCIe 2.0, no big deal.
The PCIe 3.0 vidcard will work just fine in PCIe 2.0 motherboard.
There will be no change in the vidcard's spec, regardless of its installation slot.
Regards


No it's not? I don't even have to show you the Graphs, because GTX 560 ti is slower than GTX 660. I've owned it myself and now I have GTX 660, because GTX 560 ti died on me not long ago.
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December 11, 2012 5:32:56 PM

A 3.0 card in a 2.0 slot will not cause any issues, all PCI-e versions have always been backwards compatible, you won't see any major issues.
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December 12, 2012 6:33:49 AM

Alright guys, now finally which one should I choose..560 or 560Ti or 660 or 660Ti??
And what specific manufacturer and model..?

Msi GeForce GTX560 Ti 1GB DDR5 NVidia PCI E Graphics (N560GTX-Ti Hawk)
MSI Geforce GTX560 Ti 2GB GDDR5 NVidia PCI E Graphic Cards (N560GTX-TI TWIN FROZR II 2GD5-OC)
Asus Geforce GTX650 Ti 1GB DDR5 Nvdia PCI E Graphic Cards (GTX650TI-1GD5)

MSI Geforce GTX560 1GB GDDR5 NVidia PCI E Graphic Cards (N560GTX Twin Frozr II-OC)

Again this is just initial list..Open to suggestions.
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a b U Graphics card
December 12, 2012 8:39:09 AM

k1200lt said:
Alright guys, now finally which one should I choose..560 or 560Ti or 660 or 660Ti??
And what specific manufacturer and model..?

Msi GeForce GTX560 Ti 1GB DDR5 NVidia PCI E Graphics (N560GTX-Ti Hawk)
MSI Geforce GTX560 Ti 2GB GDDR5 NVidia PCI E Graphic Cards (N560GTX-TI TWIN FROZR II 2GD5-OC)
Asus Geforce GTX650 Ti 1GB DDR5 Nvdia PCI E Graphic Cards (GTX650TI-1GD5)

MSI Geforce GTX560 1GB GDDR5 NVidia PCI E Graphic Cards (N560GTX Twin Frozr II-OC)

Again this is just initial list..Open to suggestions.


Choose GTX 660! It has the best value of those GPU, or almost.

http://www.techpowerup.com/reviews/Club_3D/HD_7870_joke...

Try to see how great the GTX 660 is in Far Cry 3!

http://www.youtube.com/watch?v=BRnKfQaVVwM&feature=plcp
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January 16, 2013 12:39:36 PM

Best answer selected by k1200lt.
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