AMD Athlon II X4 645 Review

Written by Paul Goodhead

October 6, 2010 | 10:47

Tags: #am3 #athlon #best #black-edition #cheapest #cpu #dual-core #fastest #overclocking #pentium #phenom #processor #quad-core #socket-am3

Companies: #amd

Media Benchmarks

Download from: bit-tech.net

We have developed our own suite of benchmarks using real-world and open source applications to simulate how PCs are actually used. The suite comprises an image editing test using Gimp, a video encoding test using Handbrake and a multi-tasking test using 7-Zip to archive and encrypt a large batch of files while a HD movie plays in mplayer.

A score of 1,000 means that the test system is as fast as our reference PC, which used a 2.66GHz Intel Core 2 Duo E6750 at stock speed, 2GB of Corsair 1,066MHz DDR2 memory, a 250GB Samsung SpinPoint P120S hard disk and an Asus P5K Deluxe WiFi-AP motherboard. The scoring is linear, so a system scoring 1,200 points is 20 per cent faster than our reference system. Equally, a system scoring 1,200 is 4 per cent faster than a system scoring 1,150.

Multi-tasking with 7-Zip and mplayer

Websites: www.7-zip.org and www.mplayerhq.hu

Multi-tasking is a phrase that we're all familiar with, because most of us are now used to running multiple applications at the same time. However, to run multiple applications well you need a powerful (ideally multi-core) CPU and plenty of RAM.

Our multi-tasking test performs a massive file backup (with encryption) using 7-Zip, while simultaneously playing back a HD movie file using mplayer, making it a demanding test for any PC.

Multi-tasking Test

Media Benchmarks

  • Intel Pentium G6950 (4.62GHz)
  • AMD Athlon II X3 455 (3.85GHz)
  • AMD Athlon II X4 645 (3.7GHz)
  • AMD Athlon II X3 455 (3.1GHz)
  • AMD Athlon II X4 645 (3.1GHz)
  • Intel Pentium G6950 (2.8GHz)
  • 996
  • 899
  • 893
  • 808
  • 802
  • 692
0
250
500
750
1000
Score (points), higher is better

Overall Score


The overall score is an unweighted mean average of the scores of the three individual tests. A score of 1,000 means that the test system is as fast as our reference PC, which used a 2.66GHz Intel Core 2 Duo E6750 at stock speed, 2GB of Corsair 1,066MHz DDR2 memory, a 250GB Samsung SpinPoint P120S hard disk and an Asus P5K Deluxe WiFi-AP motherboard. The scoring is linear, so a system scoring 1,200 points is 20 per cent faster than our reference system. Equally, a system scoring 1,200 is 4 per cent faster than a system scoring 1,150.

Overall Media Benchmark Score

Media Benchmarks

  • Intel Pentium G6950 (4.62GHz)
  • AMD Athlon II X4 645 (3.7GHz)
  • AMD Athlon II X3 455 (3.85GHz)
  • AMD Athlon II X4 645 (3.1GHz)
  • AMD Athlon II X3 455 (3.1GHz)
  • Intel Pentium G6950 (2.8GHz)
  • 1604
  • 1290
  • 1247
  • 1102
  • 1028
  • 1027
0
250
500
750
1000
1250
1500
1750
Score (points), higher is better

Read our Perfomance Analysis
Discuss this in the forums

Posted by phuzz - Wed Oct 06 2010 09:59

Still waiting for the performance crown to swing back from Intel to AMD. Guess I better wait a bit longer :(
I'd love to be able to advise people to buy AMD again, but at the moment there's only a few situations when that makes sense.

Posted by javaman - Wed Oct 06 2010 10:15

Im still trying to decide weather to do a complete upgrade or drop a phenom II 955/970 or even an athlon II x4 into my current am2+ set up and upgrade the mobo when bulldozer drops. I want to find out if bulldozer boards will be compatible with phenom/Athlon II's. If not Ill hold out for a total rebuild when intel drop sandybridge and their first gen core i's drop in price. Out of interest how far behind the phenom's is this quad?

Posted by adam_bagpuss - Wed Oct 06 2010 10:19

i dont get it you slated the Athlon II X4 620 saying it was a budget quad-core and dont fall for the hype. This however is the same thing but more mhz and higher price but it recieves a much better review ? (granted not glowing but still better)

Posted by xaser04 - Wed Oct 06 2010 10:48

It would have been useful if a Phenom II X4 (at round the same stock clock as this Athlon II (so something like the 955) was included as a point of reference (If only to show how much of a performance drop you see when the L3 cache is missing.

Other than that it's a good review of a decidedly average chip. I think the entire conclusion page should be replaced with 'MEH'.
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