The Sandy Bridge Review: Intel Core i7-2600K, i5-2500K and Core i3-2100 Tested
by Anand Lal Shimpi on January 3, 2011 12:01 AM EST
Visual Studio 2008: Compiler Performance
You guys asked for it and finally I have something I feel is a good software build test. Using Visual Studio 2008 I'm compiling Chromium. It's a pretty huge project that takes over forty minutes to compile from the command line on the Core i3 2100. But the results are repeatable and the compile process will stress all 12 threads at 100% for almost the entire time on a 980X so it works for me.
I don't have a full set of results here but I'm building up the database. The 2600K manages a 12% lead over the previous generation high end chips, but it can't touch the 980X. The 2500K does well but it is limited by its lack of Hyper Threading. The Phenom II X6 1100T beats it.
Flash Video Creation
Excel Math Performance
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omelet - Tuesday, January 11, 2011 - link
For almost any game, the resolution will not affect the stress on the CPU. It is no harder for a CPU to play the game at 2560x1600 than it is to play at 1024x768, so to ensure that the benchmark is CPU-limited, low resolutions are chosen.For instance, the i5 2500k gets ~65fps in the Starcraft test, which is run at 1024x768. The i5 2500k would also be capable of ~65fps at 2560x1600, but your graphics card might not be at that resolution.
Since this is a review for a CPU, not for graphics cards, the lower resolution is used, so we know what the limitation is for just the CPU. If you want to know what resolution you can play at, look at graphics card reviews. Reply
Tom - Sunday, January 30, 2011 - link
Which is why the tests have limited real world value. Skewing the tests to maximize the cpu differences makes new cpus look impressive, but it doesn't show the reality that the new cpu isn't needed in the real world for most games. ReplyOyster - Monday, January 03, 2011 - link
Maybe I missed this in the review, Anand, but can you please confirm that SB and SB-E will require quad-channel memory? Additionally, will it be possible to run dual-channel memory on these new motherboards? I guess I want to save money because I already have 8GB of dual-channel RAM :).Thanks for the great review! Reply
CharonPDX - Monday, January 03, 2011 - link
You can confirm it from the photos of it only using two DIMMs in photo. ReplyJumpingJack - Monday, January 03, 2011 - link
This has been discussed in great detail. The i7, i3, and i5 2XXX series is dual channel. The rumor mill is abound with SB-E having quad channel, but I don't recall seen anything official from Intel on this point. Reply8steve8 - Monday, January 03, 2011 - link
the K processors have the much better IGP and a variable multiplier, but to use the improved IGP you need an H67 chipset, which doesn't support changing the multiplier? ReplyViRGE - Monday, January 03, 2011 - link
CPU Multiplier: Yes, H67 cannot change the CPU multiplierGPU Multiplier: No, even H67 can change the GPU multiplier Reply
mczak - Monday, January 03, 2011 - link
I wonder why though? Is this just officially? I can't really see a good technical reason why CPU OC would work with P67 but not H67 - it is just turbo going up some more steps after all. Maybe board manufacturers can find a way around that?Or is this not really linked to the chipset but rather if the IGP is enabled (which after all also is linked to turbo)? Reply
Rick83 - Monday, January 03, 2011 - link
I just checked the manual to MSI's 7676 Mainboard (high-end H67) and it lists cpu core multiplier in the bios (page 3-7 of the manual, only limitation mentioned is that of CPU support), with nothing grayed out and overclockability a feature. As this is the 1.1 Version, I think someone misunderstood something....Unless MSI has messed up its Manual after all and just reused the P67 Manual.... Still, the focus on over-clocking would be most ridiculous. Reply
Rick83 - Monday, January 03, 2011 - link
also, there is this:http://www.eteknix.com/previews/foxconn-h67a-s-h67...Where the unlocked multiplier is specifically mentioned as a feature of the H67 board.
So I think anandtech got it wrong here.... Reply