PCIe 1.x x16 vs PCIe 2.0 x16 slot

Micro-star international / Ms-6380e
February 18, 2011 at 09:30:50
Specs: Microsoft Windows XP Professional, 1.533 GHz / 1023 MB
On some motherboards, what is the difference between the following:

1x PCIe 1.x (or unmentioned) x16
1x PCIe 2.0 x16


I plan on buying one of the following GPUs but I'm unsure if there will be a major disadvantage because of the PCIe slot difference on motherboards:

XFX Radeon HD 6850 (HD-685X-ZNFC) - http://xfxforce.com/en-us/products/...
EVGA GeForce GTX 460 1024MB EE (External Exhaust) - http://www.evga.com/products/morein...


And the motherboards are (in case you're wondering):

Asus M4N68T - http://www.asus.com/product.aspx?P_...
MSI 880GM-E41 - http://www.msi.com/product/mb/880GM...


See More: PCIe 1.x x16 vs PCIe 2.0 x16 slot

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#1
February 18, 2011 at 11:22:46
You could google it. The major difference is in the data rate (bandwidth).

PCIe x16 1.x = 250 MB/sec
PCIe x16 2.x = 500 MB/sec
PCIe x16 3.0 = 1000MB/sec

http://www.bit-tech.net/hardware/20...

The ASUS board on your list is based on an outdated chipset & shouldn't be considered. The MSI uses one of the latest chipsets from the AMD 800 series.


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#2
February 18, 2011 at 12:35:50
Hmm, well I know it's old, but what I mean is, would it cause any problems, slow downs, underperformance when in games such as Starcraft II, given that all the other hardware is exactly the same, including GPU and CPU? Or is it unnoticeable? The price difference between those two is considerable.

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#3
February 18, 2011 at 12:46:08
As Mickliq said, the MSI board is the only one you should consider. It has PCIx16 2.0. any card you buy that uses pci 2.0 shouldn't be used in a 1,0 slot. You'll defeat the purpose of having it. Don't chintz on the Mobo.

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#4
February 18, 2011 at 13:11:21
Alright, thank you. That complicates things for my chosing. I was considering a buildset based on AMD Phenom II X2 570 (yet to be released) versus a build based on Intel Pentium G6960, but the sum of all components needed is now favorable towards Intel.

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#5
February 18, 2011 at 13:34:14
You don't need to go with an Intel build. If that Mobo was too much for you. look at different boards. Newegg.com has a huge assortment of boards. You can use the advanced search on the page to find a board. If you're going to use a pci-e x16 2,0 card, just make sure the mobo had the slot.

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#6
February 18, 2011 at 15:07:27
"I was considering a buildset based on AMD Phenom II X2 570 (yet to be released) versus a build based on Intel Pentium G6960"

Nothing special about either of those CPUs, especially the Pentium.


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#7
February 19, 2011 at 00:14:35
"PCIe x16 1.x = 250 MB/sec
PCIe x16 2.x = 500 MB/sec
PCIe x16 3.0 = 1000MB/sec"

Those are the x1 transfer rates, not x16. PCIe x16 2.0 can transfer 8GB/sec (or 16GB/sec, if you transfer data both ways at the same time--and you can, since PCIe is a full duplex bidirectional bus unlike PCI and AGP).

"I was considering a buildset based on AMD Phenom II X2 570 (yet to be released) versus a build based on Intel Pentium G6960,"

The X2 570 is faster than the Pentium, but what you should really be considering is the Athlon II X4. :)

Super PIII | Unlocked ES Tualatin @ 1.8GHz (150x12, 1.65v, 512K L2)
2GB PC2700 | 500GB | Radeon x1950Pro | Apollo Pro 266T | Win 7 Pro


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