The Real Conroe Successor: Clarkdale & All You Need to Know about Westmere
by Anand Lal Shimpi on September 24, 2009 6:00 PM EST- Posted in
- CPUs
AES-NI
Westmere does add some new instructions to x86, although the big expansion comes with AVX and Sandy Bridge next year. Westmere gets six new encryption/decryption instructions. The group of instructions accelerate AES (Advanced Encryption Standard) and are thus referred to as AES-NI.
All the new instructions need is software support and you'll see acceleration on Westmere. There were Winzip demos aplenty, which will have full acceleration support when the first Westmere chips hit.
When accelerated, Intel believes there will be no performance hit for encryption/decryption and it had the demos to back it up.
Here we're looking at disk throughput of an Intel SSD with full disk encryption enabled. Without AES-NI the performance takes a real hit:
40MB/s reads, 20 - 30MB/s writes
But with it, you can hardly tell you're even running AES:
~150MB/s reads, 50MB/s+ writes
Intel expects that full disk encryption and improved security will be commonplace once Westmere is in the mainstream.
Facebook
Twitter
RSS
96 Comments
View All Comments
Ryun - Thursday, September 24, 2009 - link
That Cinebench score doesn't look that great, though I don't know the price of Clarkdale (would this fit into the ~$50-$100 bracket?). Otherwise, I'm excited to see these processors bring on more mini-itx proliferation and they look very capable processors.It's a good thing AMD has something to combat these processors in the form of it's Athlon II X4 line. Otherwise I'd say these, not Lynnfield or Bloomfield, would be the nail in the coffin for them.
yacoub - Thursday, September 24, 2009 - link
So to summarize the Intel options for buyers: Basically Intel is going to offer the new 32nm process for super-high-end 6core setups and for HTPC-level dual-core budget systems, but the average gamer and enthusiast who just wants a middle-of-the-road, solid, high-performing cpu is going to be limited to 45nm Lynnfield P55 or an aging i7 920 on an X58 board?tim851 - Friday, September 25, 2009 - link
I'd reckon, that the entry level 6-core will be at the i7 920's price point, so that will be your sweet-spot CPU.Intel is probably pushing the Quads in the 100-200$ price segment and the Dual Cores below 100$.
vshin - Friday, September 25, 2009 - link
Gulftown will start at $1k. Lynnfield will be the only Intel option for the budget gamer market segment (<$250 CPU, <$250 video card, no SLI) until Sandy Bridge. Stay away from the X58 platform, it's a dead-end money pit.MadMan007 - Friday, September 25, 2009 - link
I reckon you need to put down the crack pipe :D There's no way Gulftown will be ~$300.yacoub - Friday, September 25, 2009 - link
Not only that but that would require an X58 platform. What if you're running a P55? No 32nm love with more than 2 cores until late 2010 if at all? :(archcommus - Friday, September 25, 2009 - link
I agree as well. Although I'm not looking to upgrade right now anyway, I, like many others here I'm sure, have a Q6600 right now. I would want my next CPU to be a quad core with HT, preferrably 32nm, and have all the latest features like turbo mode and the on-die PCIe and memory controllers. Right now that option doesn't exist. If Westmere won't have a quad core option I guess we're just waiting for a Lynnfield die shrink.srue - Thursday, September 24, 2009 - link
I agree. I just want a 32nm Lynnfield.yacoub - Thursday, September 24, 2009 - link
Poor wording. Should replace "middle of the road" with "enthusiast overclocking system" because that's what I meant. I mean the type of CPU that's under $300 but more than 2 cores - what we've been building for the past couple years - there won't be a 32nm die shrink until SandyBridge and even then it will have more on the die than just a CPU.So for those of us building a gaming rig, who would rather not pay for an extra GPU or whatever on the die that we'd just end up disabling because we have a separate NVidia/AMD GPU on the PCIe bus, there is no 32nm die shrink on the horizon aside from a 6-core X58 chip?
jonGhast - Thursday, September 24, 2009 - link
There are some rumblings that we might see bloomfield and lynnfield get 32nm shrinks around the middle of next year.No evidence or links but it's possible.