The Sandy Bridge Preview
by Anand Lal Shimpi on August 27, 2010 2:38 PM ESTThe Test
As was the case with Lynnfield, the current Sandy Bridge CPUs Intel is sampling are slightly different than what will be sold. The Core i5 2400 runs at 3.1GHz, has four cores, 6MB of L3 cache but no Hyper Threading. In order to help Intel’s partners test HT functionality however, the i5 2400s being sampled right now have Hyper Threading enabled. For the purposes of our test I’ve run with HT both enabled (to give you an idea of higher end SB parts) and disabled (to give you an idea of i5 2400 performance).
The other major difference between what’s out today and what’s coming in Q1 is turbo. Early Sandy Bridge samples, ours included, do not have turbo enabled. The CPU simply runs at 3.1GHz all the time, regardless of workload. The final retail 2400 will be able to run at up to 3.4GHz.
In other words, what we show here should be indicative of final performance, but it's probably slower than what will ship in Q1.
On the GPU side, the part I’m testing appears to be the single-core GPU configuration (6 EUs). Intel hasn’t released any info as to what parts will get the dual-core/12 EUs GPU configurations, although it may make sense for Intel to use the 12 EU parts in notebooks given the importance of integrated graphics to the mobile market. Update: The part we're looking at may actually have been a lower clocked 12 EU part, we're still waiting for additional confirmation.
Our test platform was a H67 based motherboard running with 4GB of DDR3-1333, the same memory we use in our Lynnfield testbeds.
I’m comparing to four other CPUs. The Core i7 980X for a high end comparison, the Core i7 880 for a near clock-for-clock comparison (albeit with HT enabled), the Core i5 760 for a potential price comparison and the Phenom II X6 1090T. The latter should be AMD’s fastest offering (if not close to it) when Sandy Bridge ships. Update: Note the Core i5 650 is actually the predecessor to the Core i5 2400, however I didn't feel a dual core vs. quad core comparison was too fair. The i5 760 will actually go head to head with the higher clocked i5 2500 when it launches in Q1.
| Motherboard: |
ASUS P7H57DV- EVO (Intel H57) Intel DP55KG (Intel P55) Intel DX58SO (Intel X58) Intel DX48BT2 (Intel X48) Gigabyte GA-MA790FX-UD5P (AMD 790FX) |
| Chipset Drivers: |
Intel 9.1.1.1015 (Intel) AMD Catalyst 8.12 |
| Hard Disk: | Intel X25-M SSD (80GB) |
| Memory: |
Corsair DDR3-1333 4 x 1GB (7-7-7-20) Corsair DDR3-1333 2 x 2GB (7-7-7-20) |
| Video Card: |
eVGA GeForce GTX 280 (Vista 64) ATI Radeon HD 5870 (Windows 7) |
| Video Drivers: |
ATI Catalyst 9.12 (Windows 7) NVIDIA ForceWare 180.43 (Vista64) NVIDIA ForceWare 178.24 (Vista32) |
| Desktop Resolution: | 1920 x 1200 |
| OS: |
Windows Vista Ultimate 32-bit (for SYSMark) Windows Vista Ultimate 64-bit Windows 7 x64 |
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Anand Lal Shimpi - Friday, August 27, 2010 - link
I don't believe any of these apps have AVX support, they're all too old for that.Take care,
Anand
ESetter - Friday, August 27, 2010 - link
Thank you for the quick answer. It would be great to include some software with AVX support in the full review, when Sandy Bridge launches. Probably the Intel Math Kernel Library will be updated in time.darckhart - Friday, August 27, 2010 - link
1. i'd like to see some temp numbers. along with, does intel stock hsf actually do the job here? (which they have been getting better at really)2. i didnt see anything about accelerated hd video playback using the on die gpu?
3. sure these cpu look great from price point performance gain....until you realize you need a full platform upgrade to go along with it...which if we assume mainstream mobo around the 100$ mark and ram to match since they're taking away the bclk deal... and every 2 yrs is a bit too soon for full platform upgrade imo.
4. hardware virtualization parts? i know the current i3 vs i5/7 chips had some stuff disabled. will these SB chips follow the same profile?
5. mobile versions? we know the mobile ones are usually cut back to fit low tdp profile. will the same cuts apply like the current mobile i3/i5 parts (eg, no real quad core parts)? otoh, what about the quad core mobiles? the current i7 mobile quads are laughable at their performance and heat output (i'm looking at you first gen hp envy). do you think these SB quad mobiles will actually be decent?
DanNeely - Friday, August 27, 2010 - link
Wikipedia lists both 2 and 4 core mobile parts. Not definative but they generally do a good job of keeping up with the latest leaks for things like this.http://en.wikipedia.org/wiki/Sandy_Bridge_(microar...
hamitaltintop22 - Friday, August 27, 2010 - link
I hope there is a price drop for the i5 750 to around $150 when this comes out or i7 920 to $200 (no microcenter here).DesktopMan - Friday, August 27, 2010 - link
I'm not sure about this, but I seem to recall having read that aes-ni instructions use the GPU, at least partially. Makes sense as the gpu is excellent at parallel tasks. If this is the case, would the 6 EU part perform differently than the 12 EU part at AES?Any news on when the inevitable Q67 would launch? I guess it's likely that Q67 will use AMT 6.0 as it was a pretty recent upgrade.
With sata III support at launch you'd imagine they'd also support sata III on their gen 3 SSDs. Time will tell I guess.
overclocking101 - Friday, August 27, 2010 - link
wow bummer. welcome to the end of intel Bus speed overclocking. I will not be adapting the new sockets unless something happens and intel changes their minds. overclocking is not as easy as switching multiplyers even EE cpu's of nowadays show that. 90% of the high overclocks with EE cpus show that a mixture of multi and bus speed is needed. i sense though that with the higher end socket intel will allow it. if not i think its a very bad move on their part.starfalcon - Friday, August 27, 2010 - link
I don't think any of the sandy bridge graphics will be able to get to GT 240 levels.This one trades blows with the 5450 as we can see, and just looking at 3DMark06 scores the 5450 scores about 3500 or so, while the GT 240 does maybe 9000 or 10000.
If the more powerful sandy bridge graphics can get up to 4000 or 5000 or so that would be great, that would be beating the 9400 GT and closing in on the 9500 GT, not getting to GT 240 levels though. Wonder what the next integrated graphics after this will be like.
TETRONG - Friday, August 27, 2010 - link
I take it this means it will soon be the optimum time to purchase current-gen technology at significantly reduced prices?Just wanting to build a no nonsense system at slightly below the current price/performance sweet-spot.
Seems Intel are only interested in toying with consumers.
They've wasted die space that could've been used for a more capable CPU. How many years have we been chained under 4Ghz frequency? 5 years or so?
Nine women can't make a baby in one month! Not every problem is parallelizable - we need greater frequencies/efficiencies.
Now they are locking processors and playing games with the sockets. No USB 3.0!!?
Garbage, No Thanks!!!
Seems you are giving them a free pass Anand. Very convenient timing to steal AMD's thunder, eh!
I love you man - big fan since the beginning, but you should read Scott Wasson over at Tech Report. Those value scatterplots are very helpful to me - these regurgitated press releases, not so much.
Sorry;(
To be so harsh, but we deserve better than these kiddie chips!
Only you can hold them accountable for these failures of imagination.
wyvernknight - Friday, August 27, 2010 - link
I am a bit disappointed. Seems like since intel is wiping the floor with AMD, decided it was OK to screw us all over with this socket thing. I will still buy an intel processor if AMD has no cards to play, but i wont be pleased.