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Old January 3, 2011, 04:47 AM
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Default 2011 And Still Sharing Lanes?

Skip this if you know your sandy bridge:

Asking a complicated Q and not minding to hear your thoughts, I just read a review of the Asus Evo high-end SLI/CF ready SB mobo on BMR, and found out that SB can not support 32 lanes in SLI/CF, rather share 16 lanes on both PCI-E slots (8-8). A drawback! As with last generation's 1156 chipset, the higher-end the GPU was, the more performance was compromised (about 5% or more), but that was last gen and with newer and more powerful GPUs that bottle neck will increase. On the positive side the performance beats all 1366 Q-Core CPUs. Can you see the Q coming?

Is Sandy Bridge a better or worse alternative to X58 for dual GPU?
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Old January 3, 2011, 09:30 AM
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Quote:
Is Sandy Bridge a better or worse alternative to X58 for dual GPU?
Take it for what it's worth (I run an old Q9550 and SINGLE HD5870), but IMHO:

-In synthetic benchmarks, the Sandy's increased perf will shine. (read gaming benchmarks like 3dMarks)

-even if the 8x/8x PCi-E situation is the same as 1156 (with that 5% loss you talk about), you won't really notice, because of the strong CPU performance...so numbers will be higher than actual 1156 SLI/CRossfire results, equivalent to S1366 results or BETTER...

-Because of the new platform/architecture, it will be impossible to compare apples to apples...

-You'd better wait for 2011 if you don't want to deal with 8x/8x limitations, on-CPU IGP and dual-channel...but the S2011 CPUs will have higher TDP and also cost more, use triple channel....

My two cents...I'm trying to make my mind on either grabbing a 2600K, wait for AMD bulldozer (in case it rocks) or S2011....
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Old January 3, 2011, 11:21 AM
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This review, from TT, is focusing on GAMING and compares P67, P55 and X58...

EVERYTHING is tested using the GTX580!!!

Sad thing, no Crossfire/SLI stuff yet... (sorry)

But at stock, with a single 580, the 2600K compares with the 980X...
P67 Sandy Bridge Gaming Performance Analysis :: TweakTown USA Edition


For your info...
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Last edited by Delavan; January 3, 2011 at 11:30 AM.
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Old January 3, 2011, 12:12 PM
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Quote:
Originally Posted by Luay79 View Post
Skip this if you know your sandy bridge:

Asking a complicated Q and not minding to hear your thoughts, I just read a review of the Asus Evo high-end SLI/CF ready SB mobo on BMR, and found out that SB can not support 32 lanes in SLI/CF, rather share 16 lanes on both PCI-E slots (8-8). A drawback! As with last generation's 1156 chipset, the higher-end the GPU was, the more performance was compromised (about 5% or more), but that was last gen and with newer and more powerful GPUs that bottle neck will increase. On the positive side the performance beats all 1366 Q-Core CPUs. Can you see the Q coming?

Is Sandy Bridge a better or worse alternative to X58 for dual GPU?
that's because 1155 is not a high end platform...wait for 1356/2011...you're comparing oranges to apples
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Old January 3, 2011, 05:05 PM
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Here, over at Hardware Heaven, you can see a reading of Sandy P67 with Crossfired 6970s...compared to 875K (1156), seems to be the same stuff...

Intel Core i7-2600K, Core i5-2500K and P67 / H67 Motherboards Review - Discrete GPUs / 3DMark 11

It scales good, but keeps the same limitation as the 1156 platform...
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Old January 3, 2011, 05:14 PM
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Intel Core i7-2600K and i5-2500K Processors Debut - HotHardware

looks decent

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Old January 3, 2011, 11:14 PM
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Thanks Del for your view & Dan for that graph. 8x8 lanes and 92% scaling. Wtf was I thinking!?

Did not provide the specific benchmark I needed but said enough! Safe to assume/guess that an i7 2600k is a better performer than i7 950 in dual GPU.

I'm not that picky with fruits. What matters is benchmark results and shelf price. If I'm building for now, i7-2600k/Asus Evo for a little over $500, or i7-950/AsusSAbertoothX58 for a little bit under $500? Considering the low price of the Corsair Vengeance series RAM kit, which only deals in 8GB for 1155/1156 or 12GB for 1136, 1155's dual channel memory would make the Sandy Bridge build cost the same as the X58 build.

Another benchmark I need between those two CPUs is power consumption. It could be so drastic I can afford a smaller PSU for the 1155 as well.

Appreciate the feed back guys!
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Old January 3, 2011, 11:30 PM
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dont thank me, thank the people at the site that did the work :)

at that resolution, with max eye candy on, im thinking it should have a hit over full 16x, afterall the cpu is secondary, on those settings.

as for power draw....










so for power consumption, unless the different reviews use exact the same hardware,hooked up to the same exact ups, and so on? those numbers will go up and down a good 20 watts or so.or more.

in a way its a bit of a shame price wise, but decent enough. this puts lots of hurt on those who just got 1366, those getting an i3+cheap board not so much.
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Old January 4, 2011, 02:17 AM
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For sure! As for the confusion, all things should be clear within a month or two.

ASUS P67 MaximusIV Extreme has an NVIDIA NF200 chip on the board to boost the number of PCIe lanes up to 32, dual-GPUs at x16 on each slot or a set of three cards in Triple SLI at x16/x8/x8. I'm sure it will be at least $300 so I hope the SabertoothP67 has it as well.
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Old January 4, 2011, 07:59 AM
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Well.... So much for this 1200 watt PSU...

>_> What a waste of money, hahah.
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