The 6-series Platform

At launch Intel is offering two chipset families for Sandy Bridge: P-series and H-series, just like with Lynnfield. The high level differentiation is easy to understand: P-series doesn’t support processor graphics, H-series does.

There are other differences as well. The P67 chipset supports 2x8 CrossFire and SLI while H67 only supports a single x16 slot off of the SNB CPU (the chip has 16 PCIe 2.0 lanes that stem from it).

While H67 allows for memory and graphics overclocking, it doesn’t support any amount of processor overclocking. If you want to overclock your Sandy Bridge, you need a P67 motherboard.

6Gbps

Had SSDs not arrived when they did, I wouldn’t have cared about faster SATA speeds. That’s how it worked after all in the evolution of the hard drive. We’d get a faster ATA or SATA protocol, and nothing would really change. Sure we’d eventually get a drive that could take advantage of more bandwidth, but it was a sluggish evolution that just wasn’t exciting.

SSDs definitely changed all of that. Today there’s only a single 6Gbps consumer SSD on the market—Crucial’s RealSSD C300. By the middle of the year we’ll have at least two more high-end offerings, including SandForce’s SF-2000. All of these SSDs will be able to fully saturate a 3Gbps SATA interface in real world scenarios.


Intel's DP67BG—The blue SATA ports on the right are 6Gbps, the black ones are 3Gbps

To meet the soon to be growing need for 6Gbps SATA ports Intel outfits the 6-series PCH with two 6Gbps SATA ports in addition to its four 3Gbps SATA ports.

I dusted off my 128GB RealSSD C300 and ran it through a bunch of tests on five different platforms: Intel’s X58 (3Gbps), Intel’s P67 (3Gbps and 6Gbps), AMD’s 890GX (6Gbps) and Intel’s X58 with a Marvell 9128 6Gbps SATA controller. The Marvell 91xx controller is what you’ll find on most 5-series motherboards with 6Gbps SATA support.

I ran sequential read/write and random read/write tests, at a queue depth of 32 to really stress the limits of each chipset’s SATA protocol implementation. I ran the sequential tests for a minute straight and the random tests for three minutes. I tested a multitude of block sizes ranging from 512-bytes all the way up to 32KB. All transfers were 4KB aligned to simulate access in a modern OS. Each benchmark started at LBA 0 and was allowed to use the entire LBA space for accesses. The SSD was TRIMed between runs involving writes.

Among Intel chipsets I found that the X58 has stellar 3Gbps SATA performance, which is why I standardize on it for my SSD testbed. Even compared to the new 6-series platform there are slight advantages at high queue depths to the X58 vs. Intel’s latest chipsets.

Looking at 6Gbps performance though there’s no comparison, the X58 is dated in this respect. Thankfully all of the contenders do well in our 6Gbps tests. AMD’s 8-series platform is a bit faster at certain block sizes but for the most part it, Intel’s 6-series and Marvell’s 91xx controllers perform identically.

I hate to be a bore but when it comes to SATA controllers an uneventful experience is probably the best you can hope for.

Overclocking: Effortless 4.4GHz+ on Air UEFI Support: 3TB Drives & Mouse Support Pre-Boot
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  • BSMonitor - Tuesday, January 04, 2011 - link

    You'd spend $80 on a 6-core MB ?? LOL

    If you buy a 6-core Phenom, likely you'll be in th 140-180 range for a decent MB..

    Funny how the cheapers rationalize their cheapness.
    Reply
  • zipzoomflyhigh - Tuesday, January 04, 2011 - link

    That's not true at all. Most $40-50 AM3 mobo's support X6. If you don't game or overclock, you don't need extra pci-e lanes and extra cooling. Especially for a workstation. Reply
  • Oxford Guy - Monday, January 03, 2011 - link

    Yeah, I'm stoked about the new low-level DRM.

    This is sure to run it fast.
    Reply
  • talevski - Thursday, January 06, 2011 - link

    i think that amd 880g mainbord with cpu araound 90 dolars plus some 55xx series gpu can do better in terms of encoding decoding video playback games etc. and all that without alot of money spend on inetl new socekets wich you have to trow away when they make the next cpu.So please corect me if i am wrong

    to anandtech&co
    Reply
  • pshen7 - Tuesday, February 22, 2011 - link

    The charts and the numbers say it all. This is definitely worth an upgrade for me!
    Peter Shen, founder Koowie.com
    Reply
  • Shifu_V - Saturday, April 16, 2011 - link

    Hi everyone, i dicided to build a PC but made an 1 error getting the i7 2600 if anyone is interested in buying one please let me, it's brand new sealed in it original contents.

    and i dont mind trading it in for a i7 2600k.

    and i will match the price maybe even better

    My email:vinay_chauhan20042000@yahoo.co.uk
    Reply
  • Skott - Monday, January 03, 2011 - link

    I'm wondering how supply will be on release day? Often we see new components with low supply and online stores start price gouging from day one. New Egg is particularly known for such. Lets hope supply is very good off the bat. That 2600K looks really appealing to me. Reply
  • evilspoons - Monday, January 03, 2011 - link

    One of the local computer stores had Sandy Bridge parts up for sale last week, but they're all gone now save for a few Asus P8P67 standard, pro, and deluxe boards.

    I wasn't able to see what kind of money they were asking.

    This review has convinced me that once the 2600K shows up again it's all I'll need. I was going to wait for socket 2011 but damn, the 2600 is already more than twice as fast in everything than my poor ol' Q6600.
    Reply
  • vol7ron - Monday, January 03, 2011 - link

    I'm also curious if there will be a hybrid P/H type mobo that will allow for OC'ing all components. Reply
  • sviola - Monday, January 03, 2011 - link

    Yes. There will be a Z series to be released in the 2Q11. Reply

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