The Sandy Bridge Preview
by Anand Lal Shimpi on August 27, 2010 2:38 PM ESTPower Consumption
With no quad-core 32nm desktop parts on the market today, Sandy Bridge only needs to beat Lynnfield to be more power efficient - which it does very well:
Idle power remains unchanged, but load power is much lower at the same clock and even within the same price target.
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tech6 - Friday, August 27, 2010 - link
More speed with less power - it looks like a very competitive product. I really hope that AMD has something up their sleeve with Bulldozer and Bobcat to compete with Sandy Bridge.killless - Friday, August 27, 2010 - link
17% higher performance is just not exciting.You need to give me 50% improvement at least to make me want to spend $1000 for new CPU/Motherboard/memory.
It really hasn't been all that exciting since Core 2 Quad...
tatertot - Friday, August 27, 2010 - link
I take it turbo was also disabled on the rest of the parts used to compare, right?Anand Lal Shimpi - Friday, August 27, 2010 - link
Turbo was enabled on everything else - SB performance should be higher for final parts.Take care,
Anand
tatertot - Friday, August 27, 2010 - link
Oh!Well that puts the IPC gains of Sandy over Westmere at something like 20% then, considering the 880 turbos up to 3.73GHz on single-threaded work.
That's pretty impressive.
Drag0nFire - Friday, August 27, 2010 - link
I just want to say first of all, this totally made my Friday! I love previews of upcoming architectures!Any news on the roadmap for the mobile variant of Sandy Bridge? Or do I have to wait til IDF?
Jamahl - Friday, August 27, 2010 - link
What system was this benchmarked on Anand?Anand Lal Shimpi - Friday, August 27, 2010 - link
Clarkdale - those charts were actually pulled from here, just with the SB numbers added:http://www.anandtech.com/show/2952/2
We didn't have the system for long enough to rerun the tests with the 5450 on the H67 board. The 5450 is GPU bound at those resolutions/settings however:
http://images.anandtech.com/graphs/5450_0203102236...
Those numbers were generated with a Core i7 920.
Take care,
Anand
Anand Lal Shimpi - Friday, August 27, 2010 - link
I just ran a sanity check on the Core i7 880 with the 5450, the numbers don't move by more than the normal test margins - the 5450 is totally GPU bound here.Take care,
Anand
ESetter - Friday, August 27, 2010 - link
Do you know if any of the benchmarks make use of AVX instructions? Sandy Bridge effectively doubles the maximum throughput for compute-intensive operations like SGEMM and DGEMM. While it might not translate to a 2x speedup in real-world applications, I imagine it should give a significant gain, at least in the HPC field.