GTX 280 PCI-e 1.1 vs 2.0

[MTDEW]

Has anyone tested the difference of a GTX 280 on a PCI-E 1.1 vs a PCI-e 2.0 motherboard?

Did a google search, all i ever see is comments like "the difference should be small and not worth the cost of upgrading a p35 to a newer pci-e 2.0 board"

Uhhh....you dont buy a GTX 280 for "best bang per buck" "save your $$$" , you buy it for performance.

Anyway, are there really any hard numbers out there to show if there actually is a difference?

Rather than someone just blindly commenting "there should be little difference".

 

[MTDEW]

Ok most i could find was this at Toms.
http://www.tomshardware.com/re...-express-2-0,1915.html

From what i gather from this is in the testing ....
X8 = PCIE-1.1 performance
x16 = PCIE- 2.0 performance

Is this correct or am i not completely understanding the test?

But unfortunately i still cant find if a gtx280 will saturate a pci-e 1.1 board and lose some performance.

 

[ashishmishra]

Yes, PCIe 2.0 8X = PCIe 1.1 16X. That article won't help you much because for the 9800GX2 there were two cards that needed duplicate/similar data which cause higher traffic in the PCIe bus than a single card and the 3850 is woefully underpowered in comparison to the GTX 280 to be of any help. I would go out on a limb and say that don't bother unless you absolutely must have every last drop of performance and/or plan to keep this motherboard for 2-3 years and/or play or plan to play lot of Flight Simulator X.

 

[MTDEW]

Originally posted by: ashishmishra
Yes, PCIe 2.0 8X = PCIe 1.1 16X. That article won't help you much because for the 9800GX2 there were two cards that needed duplicate/similar data which cause higher traffic in the PCIe bus than a single card and the 3850 is woefully underpowered in comparison to the GTX 280 to be of any help. I would go out on a limb and say that don't bother unless you absolutely must have every last drop of performance and/or plan to keep this motherboard for 2-3 years and/or play or plan to play lot of Flight Simulator X.

I don't mean to be rude ashishmishra as i'm sure your post has good intentions.

But i Can "go out on a limb" and guess myself.
Thats the exact kind of answer i dont need, its not useful.

And Yes I know the 3850 is too underpowered to compare to a gtx 280.(who doesnt?)

As i stated above in my first two posts, which you ignored or didnt read completely, the closest i could find was a 9800GX2 test.

And in my post right above yours i even bolded it... But unfortunately i still cant find if a gtx280 will saturate a pci-e 1.1 board and lose some performance.

Thnx for your input anyway.

 

[Fox5]

Originally posted by: MTDEW
Ok most i could find was this at Toms.
http://www.tomshardware.com/re...-express-2-0,1915.html

From what i gather from this is in the testing ....
X8 = PCIE-1.1 performance
x16 = PCIE- 2.0 performance

Is this correct or am i not completely understanding the test?

But unfortunately i still cant find if a gtx280 will saturate a pci-e 1.1 board and lose some performance.

It's really only an issue when you run out of VRAM on the card. While this is still rare even with a 512MB card, when it happens the difference between 1.1 and 2.0 is double digits, and I saw a review on 1 website that had core 2 platforms taking about a 75% hit, while AMD platforms took about a 50% hit (likely due to the higher memory bandwidth on the AMD platform because of the IMC), though keep in mind that the AMD had a lower top FPS initially. (but after VRAM ran out, it took the lead)

Of course, ram is cheap, and you can easily get a card with > 512MB VRAM and you'll probably never have to worry about the lack of VRAM situation during the lifetime of the card.

 

[hclarkjr]

check with apoppin he did a comparison of this a month or so ago.

 

[MTDEW]

Originally posted by: hclarkjr
check with apoppin he did a comparison of this a month or so ago.

Cool, is it posted on here?
Nevermind, i can search for it.
THNX for the info.

See, my problem is i have a 780i board and an e8400, now my e8400 doesnt overclock near as well with the sli board as it did with my p35 Abit IP35-E board.
But i didnt care cuz i needed the 780i for my sli setup even thjough tyhe board runs hot and just doesnt have that "rock stable" feeling i had with the intel chipset.

Now im giving that up for a single gtx280 and i cant decide if i should go back to an ip35-e or just keep running this 780i mobo.

I think im better off being more cpu bound, cuz i can make that up just by running 1920x1200 with 4x AA or 6x AA and 16x aniso.
As opposed to choking the pci express which will just get worse as i add more AA and anisotropic filtering.

Got a feeling i'll probably eventually cave and buy a newer intel chipset.