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PCI Express 2.0 question

I'm going to do some testing on the Commando @ 1680*1050 with aa/af then I'll compare it when I get my Maximus repaired/replaced (just wouldn't boot up one morning, hence being able to do a comparison - back on my Commando now :-)
 
I think everybody is missing the point as we were meant to be talking about single cards, not xfire.

Yes we all know two 4850 or 4870 in xfire takes a hit unless you are running in a pci-e 2 slot but the main question is how much of a hit does a GTX280 or 4870x2 take by running in a pci-e 1.1 slot?

I have seen no sites which have done that comparsion.
 
Greebo said:
I think everybody is missing the point as we were meant to be talking about single cards, not xfire.

Yes we all know two 4850 or 4870 in xfire takes a hit unless you are running in a pci-e 2 slot but the main question is how much of a hit does a GTX280 or 4870x2 take by running in a pci-e 1.1 slot?

I have seen no sites which have done that comparsion.
Click to expand...

Yup exactly. I would rather not swap my motherboard at the moment as reinstalling Vista and apps is a pain in the h*le ! But if it meant a big increase in performance with a 4870x2 PCI-e 2.0 versus 1.1 then I would!
 
Greebo said:
I think everybody is missing the point as we were meant to be talking about single cards, not xfire.
Click to expand...
I'm not missing the point just thought some people would find those reviews interesting :)

The HD4800 series will work fine on most motherboards, if people are buying a single card dont worry about it.

It doesn't matter at this time if you have older PCI-E or the newer PCI-E 2.0

If someone knows otherwise I am all ears! :cool:
 
Big.Wayne said:
I'm not missing the point just thought some people would find those reviews interesting :)

The HD4800 series will work fine on most motherboards, if people are buying a single card dont worry about it.

It doesn't matter at this time if you have older PCI-E or the newer PCI-E 2.0

If someone knows otherwise I am all ears! :cool:
Click to expand...

Not knocking you big Wayne and they are interesting to xfire people but deosn;t really answer the OP's question.

Yeah all 4 series works fine but at full potential?

My point is, with the same cpu, memory, 4870 do you get the same framerates in game on a pci-e 2 board as a pci-e 1 board?

There's a fair chance you might unless at very high res.

And more especially, with the 4870x2 and the GTX280.

I would want to know this before spending £300+ on a gfx card and finding that the performance is hardly any better than a £180 gfx card unless you upgrade your mobo.
 
well the article demonstrating the pcie2.0 performance vs pcie1.1 performance i think you should be safe with the 280, but you will be stuck with 98% of the performance it would be capable with the PCIE2.0.
 
DarkMatter said:
well the article demonstrating the pcie2.0 performance vs pcie1.1 performance i think you should be safe with the 280, but you will be stuck with 98% of the performance it would be capable with the PCIE2.0.
Click to expand...

Not so sure, the GTX280 and 4870x2 are both way more powerful than the cards they were using.

It might only be 75%

Too risky to spend £300 when under £200 might give same performance unless you are prepared to upgrade mobo.
 
Greebo said:
Too risky to spend £300 when under £200 might give same performance unless you are prepared to upgrade mobo.
Click to expand...

Totally agree. I would definitely want to know that before i fork 300£ for a 4870x2. Hopefully when the card comes out someone will do a comparison
 
This has really thrown a spanner into my upgrade plans. I was set to pick up a 4870x2 at launch and be set for another year or so - a nice step up from my 8800GTX.
I have a P5W DH, and would be running at 2560x1600 on the new card, so if any setup is going to showcase the limitations of the PCI-E 1.0 16x bandwith, this would be it.
Having to replace a motherboard is a huge PITA as in addition to the cost it will mean going through the whole processor/HSF install and overclocking process again, and probably having to fork out for another O/S copy...
 
It's just a case of waiting then. See the reviews or see other people's result. If it is affected then judge by how much whether it's worth getting it or whether to upgrade mobo or just settle on a 4870.

It might not be affected at all and this might be panic talk but safer to know IMO.
 
I took the plunge and got a 260 gtx i felt it was better vaule for the res i game at. It runs all my games, cod 4, tf 2 , grid , mass effect, ut3, all on full settings, aa and so one at 1680 res get 60+ fps in all them games it drops slightly when theres a lot going on but nothing you notice when you havnt got a fps counter on.

But i hear the 260s use a lot less power then the 4870's and gtx 280 so i assume uses less bandwidth also.
 
moomoomoo said:
I took the plunge and got a 260 gtx i felt it was better vaule for the res i game at. It runs all my games, cod 4, tf 2 , grid , mass effect, ut3, all on full settings, aa and so one at 1680 res get 60+ fps in all them games it drops slightly when theres a lot going on but nothing you notice when you havnt got a fps counter on.

But i hear the 260s use a lot less power then the 4870's and gtx 280 so i assume uses less bandwidth also.
Click to expand...

should have gone to google and checked some benchmarks tbh.
 
Greebo said:
Not so sure, the GTX280 and 4870x2 are both way more powerful than the cards they were using.

It might only be 75%

Too risky to spend £300 when under £200 might give same performance unless you are prepared to upgrade mobo.
Click to expand...


sorry i made the prosumption from the anandtech review on the 4870 that the 9800GX2 was ahead of it in terms of performance so i prosumed there would be a bigger bottleneck on a 9800GX2 than a 280 GTX.

But i totally agree with the risk of buying a high end graphics card then loosing the performance off it. I feel then i'm not getting the full benefits of the upgrade.
 
Some nice review site is sure to grab a GTX280 and 4870x2 and show us it running on a pci-e 1 vs pci-e 2 board and the difference.

I suspect it will be only very high res/lots of aa where the differences will appear but chances are that will be exactly the reason those people are buying a GTX280/4870x2 in the first place.
 
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