Comments on: Warning: These P55 motherboards will cripple your Crossfire/SLI performance http://www.hardware-revolution.com/p55-motherboards-crossfire-sli-performance-problem/ Unique information on how to get the best value for your computer builds and upgrades Sat, 20 Mar 2010 05:35:54 -0400 http://wordpress.org/?v=2.8 hourly 1 By: LuBu http://www.hardware-revolution.com/p55-motherboards-crossfire-sli-performance-problem/#comment-3511 LuBu Sun, 14 Mar 2010 17:40:23 +0000 http://www.hardware-revolution.com/?p=2306#comment-3511 Sorry about this MathieuB, but after speaking directly to EVGA support about the arrangements of the PCI-E lanes of the P55 LE EVGA confirmed to me that the board does NOT switch to x8, x8, but remains x16,x4 (with the x4 going through the chipset and thus running the second card effectively at x2).<br><br>It appears that the Hardware Secrets review is in fact incorrect. The board does not switch to x8,x8, and the 'specs at a glance' on the EVGA website for the P55 LE is also incorrect.<br><br>A part of me cannot help but wonder if these errors were accidentally-on-purpose... Sorry about this MathieuB, but after speaking directly to EVGA support about the arrangements of the PCI-E lanes of the P55 LE EVGA confirmed to me that the board does NOT switch to x8, x8, but remains x16,x4 (with the x4 going through the chipset and thus running the second card effectively at x2).

It appears that the Hardware Secrets review is in fact incorrect. The board does not switch to x8,x8, and the 'specs at a glance' on the EVGA website for the P55 LE is also incorrect.

A part of me cannot help but wonder if these errors were accidentally-on-purpose…

]]> By: th3r3turn http://www.hardware-revolution.com/p55-motherboards-crossfire-sli-performance-problem/#comment-3486 th3r3turn Wed, 10 Mar 2010 04:57:28 +0000 http://www.hardware-revolution.com/?p=2306#comment-3486 nice to see this is being updated! i use it for people that are lookin @ getting into i5/i7 boards! nice to see this is being updated! i use it for people that are lookin @ getting into i5/i7 boards!

]]> By: MathieuB http://www.hardware-revolution.com/p55-motherboards-crossfire-sli-performance-problem/#comment-3485 MathieuB Tue, 09 Mar 2010 19:13:08 +0000 http://www.hardware-revolution.com/?p=2306#comment-3485 The list was based off the information from the French site, which would seem, was based on early information. The EVGA P55 LE can indeed run at 8x,8x. Thanks for pointing it out, the list was updated. The list was based off the information from the French site, which would seem, was based on early information. The EVGA P55 LE can indeed run at 8x,8x. Thanks for pointing it out, the list was updated.

]]> By: MathieuB http://www.hardware-revolution.com/p55-motherboards-crossfire-sli-performance-problem/#comment-3484 MathieuB Tue, 09 Mar 2010 19:05:36 +0000 http://www.hardware-revolution.com/?p=2306#comment-3484 Thanks for pointing it out, the list was updated. Thanks for pointing it out, the list was updated.

]]> By: LuBu http://www.hardware-revolution.com/p55-motherboards-crossfire-sli-performance-problem/#comment-3483 LuBu Tue, 09 Mar 2010 18:13:43 +0000 http://www.hardware-revolution.com/?p=2306#comment-3483 I have been looking into an EVGA P55 LE for a new build that might include another ATi card for xfire in the near future. According to the EVGA website, and a review at Hardware Secrets (<a href="http://www.hardwaresecrets.com/article/804/1" rel="nofollow">http://www.hardwaresecrets.com/article/804/1</a>) both physical PCI-E 2.0 x16 slots will run at (16x, 1x) or (8x, 8x) electrically to the CPU controller. <br><br>The P55 LE, however, is on your list as running the second PCI-E 2.0 slot at 4x electrically through the chipset with a second video card installed. Something is incorrect in one of the reviews. <br><br>Can you direct me to the review where the EVGA P55 LE board is running the second card at 4x electrically, as you claimed. It doesn't appear as a reviewed board on the link to the French site.<br><br>Cheers. I have been looking into an EVGA P55 LE for a new build that might include another ATi card for xfire in the near future. According to the EVGA website, and a review at Hardware Secrets (http://www.hardwaresecrets.com/article/804/1) both physical PCI-E 2.0 x16 slots will run at (16x, 1x) or (8x, 8x) electrically to the CPU controller.

The P55 LE, however, is on your list as running the second PCI-E 2.0 slot at 4x electrically through the chipset with a second video card installed. Something is incorrect in one of the reviews.

Can you direct me to the review where the EVGA P55 LE board is running the second card at 4x electrically, as you claimed. It doesn't appear as a reviewed board on the link to the French site.

Cheers.

]]> By: th3r3turn http://www.hardware-revolution.com/p55-motherboards-crossfire-sli-performance-problem/#comment-3482 th3r3turn Tue, 09 Mar 2010 06:46:25 +0000 http://www.hardware-revolution.com/?p=2306#comment-3482 Does this need a update on here? the Asus P7P55D EVO site tells me that<br><br><a href="http://www.asus.com/product.aspx?P_ID=YhNWZrOT1OWycIgo" rel="nofollow">http://www.asus.com/product.aspx?P_ID=YhNWZrOT1...</a><br><br>2 x PCIe 2.0 x16 (single at x16 or dual at x8/x8 mode) <br>1 x PCI Express 2.0 x16 slots (at x4 mode, 2.5GT/s) <br><br>so that board should be under the list of Boards to use for SLi/Crossfire! Does this need a update on here? the Asus P7P55D EVO site tells me that

http://www.asus.com/product.aspx?P_ID=YhNWZrOT1...

2 x PCIe 2.0 x16 (single at x16 or dual at x8/x8 mode)
1 x PCI Express 2.0 x16 slots (at x4 mode, 2.5GT/s)

so that board should be under the list of Boards to use for SLi/Crossfire!

]]> By: George http://www.hardware-revolution.com/p55-motherboards-crossfire-sli-performance-problem/#comment-3348 George Tue, 16 Feb 2010 05:01:19 +0000 http://www.hardware-revolution.com/?p=2306#comment-3348 Good article I found out the hard way on my EVGA P55 LE wondering why my crossfire benchmarks were way lower than the benchmarks online. I opened up gpu-z to find slot 2 was running at 4x(16x/4x) and not 8x/8x like I though it would when I bought it. I'm now getting a new motherboard. Good article I found out the hard way on my EVGA P55 LE wondering why my crossfire benchmarks were way lower than the benchmarks online. I opened up gpu-z to find slot 2 was running at 4x(16x/4x) and not 8x/8x like I though it would when I bought it. I'm now getting a new motherboard.

]]> By: Pick http://www.hardware-revolution.com/p55-motherboards-crossfire-sli-performance-problem/#comment-3316 Pick Tue, 09 Feb 2010 06:41:32 +0000 http://www.hardware-revolution.com/?p=2306#comment-3316 Sorry, I was mistaken there - seems the Asrock P55 Extreme is indeed an 8x/8x mobo. Please delete my posts, if possible... Sorry, I was mistaken there – seems the Asrock P55 Extreme is indeed an 8x/8x mobo. Please delete my posts, if possible…

]]> By: Pick http://www.hardware-revolution.com/p55-motherboards-crossfire-sli-performance-problem/#comment-3314 Pick Mon, 08 Feb 2010 22:17:12 +0000 http://www.hardware-revolution.com/?p=2306#comment-3314 Asrock P55 Extreme is also a 16x/4x performance crippler, you should take it off your list. Anyways, good lookin'! :)<br><br>Pick Asrock P55 Extreme is also a 16x/4x performance crippler, you should take it off your list. Anyways, good lookin'! :)

Pick

]]> By: Coolermaster Extreme Power Plus or Corsair TX650W - PC Peripherals | TechEnclave http://www.hardware-revolution.com/p55-motherboards-crossfire-sli-performance-problem/#comment-3274 Coolermaster Extreme Power Plus or Corsair TX650W - PC Peripherals | TechEnclave Fri, 29 Jan 2010 20:50:46 +0000 http://www.hardware-revolution.com/?p=2306#comment-3274 [...] Re: Coolermaster Extreme Power Plus or Corsair TX650W Hey I just found this article: Warning: These P55 motherboards will cripple your Crossfire/SLI performance | Hardware Revolution [...] [...] Re: Coolermaster Extreme Power Plus or Corsair TX650W Hey I just found this article: Warning: These P55 motherboards will cripple your Crossfire/SLI performance | Hardware Revolution [...]

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