iXBT Labs - Computer Hardware in Detail

Platform

Video

Multimedia

Mobile

Other

Sandy Bridge and Lynnfield Quad-Core Processors Compared

In conditions as equal as possible.

April 25, 2011



<< Previous page

     Next page >>

Compiling


  Core i5-760 (TB Off) Core i5-2500K @2.8 GHz (TB Off) Δ
Average 136 144 6%

This benchmark (compiling Ogre 3D sources in Microsoft Visual Studio 2008) is well-optimized for multi-threading, but actually demonstrates quite humble gains.

Java


  Core i5-760 (TB Off) Core i5-2500K @2.8 GHz (TB Off) Δ
Average 124 142 15%

This is another test nicely optimized for multi-threading. And the boost is already 2.5 times higher than in compiling. Seems sort of random again. But according to stats we've already collected for this benchmark, Sandy Bridge should be most likely faster.

Web browsing


  Core i5-760 (TB Off) Core i5-2500K @2.8 GHz (TB Off) Δ
Google V8 146 167 14%
Sun Spider 196 225 15%
Average 171 196 15%

Numbers are rather average for this review.

Audio encoding


  Core i5-760 (TB Off) Core i5-2500K @2.8 GHz (TB Off) Δ
Apple Lossless 113 127 12%
FLAC 124 141 14%
Monkey's Audio 127 144 13%
MP3 (LAME) 135 156 16%
Nero AAC 130 148 14%
Ogg Vorbis 136 157 15%
Average 128 146 14%

Gains range from 12% to 16% (which is humble for this review), although we use a wide range of codecs, proprietory and open-source, all from different developers. Perhaps, the thing is that audio encoding benchmark is one of the most optimized for multi-threading in our test method? Then it means that Sandy Bridge offers considerable gains only in single or few-threaded software.

Video encoding


  Core i5-760 (TB Off) Core i5-2500K @2.8 GHz (TB Off) Δ
DivX 128 138 8%
Mainconcept (VC-1) 131 146 11%
Premiere 137 149 9%
Vegas 228 258 13%
x264 132 145 10%
XviD 137 157 15%
Average 149 166 11%

These results seem to be an indirect proof of the assumption above.

Games


  Core i5-760 (TB Off) Core i5-2500K @2.8 GHz (TB Off) Δ
Batman 124 128 3%
Borderlands 126 134 6%
DiRT 2 100 111 11%
Far Cry 2 176 192 9%
Fritz Chess 134 136 1%
GTA IV 156 156 0%
Resident Evil 122 130 7%
S.T.A.L.K.E.R. 104 107 3%
UT3 146 150 3%
Crysis: Warhead 122 132 8%
World in Conflict 154 168 9%
Average 133 140 5%

And again it's a total mess without any traceable trends. Still, you can see that Sandy Bridge doesn't prodive any gains in GTA IV. The entire gaming test has demonstrated the lowest performance boost so far.

Conclusions


  Core i5-760 (TB Off) Core i5-2500K @2.8 GHz (TB Off) Δ
Average 138 157 14%

Well, we didn't hope this test would introduce some incredible revelations. But don't worry, a much more detailed review of the Sandy Bridge microarchitecture is in the works. It will offer much new and interesting information as well as results of low-level architecture tests. As for now, let's formulate a few more or less reasonable hypotheses based on today's test results.

  1. The Sandy Bridge architecture has been overhauled. We can't say how radically, but it's much more efficient. It offers 14% boost on average, L3 cache being smaller by a quarter, and other things being equal.
  2. Even knowing more details on the new core architecture hardly allows making valid assumptions as to how the performance of specific applications will change.
  3. Even though we tested the processors in a multitude of benchmarks, there wasn't a situation when Sandy Bridge was slower than Lynnfield, core clock rates being equal.
  4. With much caution we can say that in our tests Sandy Bridge more often demonstrated higher gains (over 20%) in tests poorly optimized for multi-threading.
  5. Maybe, just maybe, the previous assumption is related to the smaller L3 cache. So, theoretically, the efficiency of the new core in handling multiple threads may be bottlenecked by such cache size.

The general conclusion is a bit banal: Sandy Bridge is much better than the previous core. Not as much as Core 2 (Conroe) was better than Pentium 4, but it's still a larger step forward in terms of architecture than Nehalem compared with the last incarnations of the aforementioned Core 2.


Write a comment below. No registration needed!


<< Previous page

Article navigation:

Page 1: Introduction, tests

Page 2: Tests cont'd, conclusions



blog comments powered by Disqus

  Most Popular Reviews More    RSS  

AMD Phenom II X4 955, Phenom II X4 960T, Phenom II X6 1075T, and Intel Pentium G2120, Core i3-3220, Core i5-3330 Processors

Comparing old, cheap solutions from AMD with new, budget offerings from Intel.
February 1, 2013 · Processor Roundups

Inno3D GeForce GTX 670 iChill, Inno3D GeForce GTX 660 Ti Graphics Cards

A couple of mid-range adapters with original cooling systems.
January 30, 2013 · Video cards: NVIDIA GPUs

Creative Sound Blaster X-Fi Surround 5.1

An external X-Fi solution in tests.
September 9, 2008 · Sound Cards

AMD FX-8350 Processor

The first worthwhile Piledriver CPU.
September 11, 2012 · Processors: AMD

Consumed Power, Energy Consumption: Ivy Bridge vs. Sandy Bridge

Trying out the new method.
September 18, 2012 · Processors: Intel
  Latest Reviews More    RSS  

i3DSpeed, September 2013

Retested all graphics cards with the new drivers.
Oct 18, 2013 · 3Digests

i3DSpeed, August 2013

Added new benchmarks: BioShock Infinite and Metro: Last Light.
Sep 06, 2013 · 3Digests

i3DSpeed, July 2013

Added the test results of NVIDIA GeForce GTX 760 and AMD Radeon HD 7730.
Aug 05, 2013 · 3Digests

Gainward GeForce GTX 650 Ti BOOST 2GB Golden Sample Graphics Card

An excellent hybrid of GeForce GTX 650 Ti and GeForce GTX 660.
Jun 24, 2013 · Video cards: NVIDIA GPUs

i3DSpeed, May 2013

Added the test results of NVIDIA GeForce GTX 770/780.
Jun 03, 2013 · 3Digests
  Latest News More    RSS  

Platform  ·  Video  ·  Multimedia  ·  Mobile  ·  Other  ||  About us & Privacy policy  ·  Twitter  ·  Facebook


24

Copyright © Byrds Research & Publishing, Ltd., 1997–2011. All rights reserved.