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Shagger
Senior Member - 2K
posted: Mar. 6, 2012 @ 9:52a
Why do these FX processors remind me of the old FX processors, great performance, but dead architecture?
GnatGoSplat
Senior Member - 2K
posted: Mar. 6, 2012 @ 11:00a
Shagger said: Why do these FX processors remind me of the old FX processors, great performance, but dead architecture?
Have you seen the benchmarks? They don't have great performance. Not even good performance.
DaCheeze
Senior Member
posted: Mar. 6, 2012 @ 12:29p
You want to show some benchmarks ?
fatxman
Handsome Member
posted: Mar. 6, 2012 @ 1:00p
GnatGoSplat said: Shagger said: Why do these FX processors remind me of the old FX processors, great performance, but dead architecture?
Have you seen the benchmarks? They don't have great performance. Not even good performance.
The benchmarks are heavy influenced by Intel. The benchmarks are designed to do well on Intel. The reviewers only show benchmark that Intel do well in. If you actually use these processors, you will know that the quad core FX is neck and neck with the 2500k for 1/2 the cost. The FX-8100 blows away anything from Intel
fatxman said: The benchmarks are heavy influenced by Intel. The benchmarks are designed to do well on Intel. The reviewers only show benchmark that Intel do well in. If you actually use these processors, you will know that the quad core FX is neck and neck with the 2500k for 1/2 the cost. The FX-8100 blows away anything from Intel
I don't buy the conspiracy theory. If benchmarks are purposely chosen to show Intel bias, why do they also show previous generation AMD Phenom II X4 performing better than FX-4100 in many benchmarks as well? Also, where are you getting "1/2 the cost"? FX-8120 is almost 90% the cost of the 2500K while FX-8150 costs more. 2500K is faster than either 8100 in almost every benchmark, and even IF you were right about an Intel conspiracy where they are really "neck and neck" as you say, you can't forget the FX-8100 series are also power-guzzling toasters which makes the slight cost difference of the 2500K over FX-8120 worthwhile for power savings alone.
I like competition and I want AMD to succeed, but it's quite clear Bulldozer is a fail. I wouldn't mind an upgrade to the Phenom II X4 965 I bought for $100 last year, but benchmarks look like the FX-4100 would be a noticeable downgrade.
Tacoma99
Senior Member - 6K
posted: Mar. 6, 2012 @ 1:49p
CPU ratings available at cpubenchmark.net
Looks like it's rated at 4338
Bought the FX-6100 for $120 when CompUSA had it on sale a few weeks ago. Works fine in my upgrade from X4-945.
squinky86
Ancient Member
posted: Mar. 6, 2012 @ 1:52p
GnatGoSplat said: DaCheeze said: You want to show some benchmarks ?
fatxman said: The benchmarks are heavy influenced by Intel. The benchmarks are designed to do well on Intel. The reviewers only show benchmark that Intel do well in. If you actually use these processors, you will know that the quad core FX is neck and neck with the 2500k for 1/2 the cost. The FX-8100 blows away anything from Intel
I don't buy the conspiracy theory. If benchmarks are purposely chosen to show Intel bias, why do they also show previous generation AMD Phenom II X4 performing better than FX-4100 in many benchmarks as well? Also, where are you getting "1/2 the cost"? FX-8120 is almost 90% the cost of the 2500K while FX-8150 costs more. 2500K is faster than either 8100 in almost every benchmark, and even IF you were right about an Intel conspiracy where they are really "neck and neck" as you say, you can't forget the FX-8100 series are also power-guzzling toasters which makes the slight cost difference of the 2500K over FX-8120 worthwhile for power savings alone.
I like competition and I want AMD to succeed, but it's quite clear Bulldozer is a fail. I wouldn't mind an upgrade to the Phenom II X4 965 I bought for $100 last year, but benchmarks look like the FX-4100 would be a noticeable downgrade.I'm not a fan of benchmarks - they're easy to do really well in (or build your product to benchmark well). The point is that most people purchase this processor because of the overclocking potential, which is very high at this price point. I didn't buy one, but this is a good price for those that do. I find that benchmark success rarely indicates real-world success. Build a good product that everyone loves, and they'll make a new benchmark that shows yours is the best .
nsdp
Dismembered Member
posted: Mar. 6, 2012 @ 8:25p
The only benchmarks that are recognized by IEEE as being legitimate are Spec.org and the DARPA HPCChallenge. http://www.hpcchallenge.org/ These are for the boys who have the best toys(and girls). Spec requires any one posting to pass a series of exams and when submitting their results to identify compliers, enhancements, flag settings and a copy of the flag files. Compare the Intel that scores 9994 on passmark http://www.spec.org/cpu2006/results/res2008q2/cpu2006-20080428-0... with the comparable AMD which scores 5499 on Passmark. http://www.spec.org/cpu2006/results/res2008q2/cpu2006-20080428-0... Results are then independently verified by SPEC and when a tester screws up you will see something like this: http://www.spec.org/cpu2006/results/res2008q2/cpu2006-20080428-0... You don't see any of the tinker toy blogs submitting their benchmarks for independent review to check and see if they screwed up. It they get the result they got paid for then that is it. In the ne plus ultra of benchmarks the HPC Challenge run by DARPA AMD has garnered 26 awards since 2005 to 0 for Intel. Sun Fujitsu has 9 and IBM has 31.
The standard way to distort results is using memory incompatible with AMD's 16k page file system. http://www.theinquirer.net/inquirer/news/1043995/ocz-releases-sp... For DDR3 it is OCZ OCZ3G1600LVAM4GK or OCZ3P1333LVAM4GK. Unless you have access to the Micron memory made for DARPA then the results are skewed. Another is using 32 bit apps on a 64 bit OS. Bulldozer has highlighted several code problems in Windows and a series of corrections are due to meet IEEE754. There are significant differences between window 7 and linux SUSE12 benchmarks for the same application. As for heat Bulldozer produces about 1.3 more flops/watt than Sandy bridge and is about twice as fast in floating point. I think that this commentary forum top500.org puts it succinctly: "As for high-performance computing, the FX-8150, as predecessor of the Interlagos processor, shows some weaknesses, but also strengths. There are, for instance, the often underestimated divisions, which shouldn't be neglected – the Linpack benchmark only adds and multiplies. In this discipline, the FX takes advantage of its two floating-point division units per module and is about twice as fast as the Core i7-2600 when processing SSE3 operations. "
AT every point since 2004 AMD has outscored Intel when honest benchmarks are used. In fact the Santa Rosa AM2 dual core out performed the Intel Cloverton quad core in the hands of someone who knew what they were doing. http://crd-legacy.lbl.gov/~oliker/papers/ipdps08_final.pdf
kboran
Addicted Member
posted: Mar. 6, 2012 @ 9:15p
There is no simple answer for what is best or fastest with CPUs. It's going to depend on the workload. The above referenced DARPA or SPEC benchmarks are a significantly different type of workload than that of a typical personal computer. DARPA is interested in things like simulating nuclear explosions rather than browsing the web. Most benchmarks have some value but it depends for what purpose.
Intel has definitely been pushing past AMD in many measurements, but raw speed isn't the only factor in a purchase. AMD tends to do well in terms of value, speed/cost. You also have to consider things like power consumption. The FX-4100 isn't necessarily the fastest CPU around but it seems to be a decent value for many uses.
Shagger
Senior Member - 2K
posted: Mar. 7, 2012 @ 9:47a
I guess I was more interested in the aspect of the AM3+ socket, how long is that socket going to be supported? I already have an X4 940 in my AM3 socket and am hesitant to upgrade to the AM3+ socket.
nsdp
Dismembered Member
posted: Mar. 7, 2012 @ 12:25p
For 99% of he public which cpu you buy won't matter. They are already at the overkill stage. For people who are doing 3D CAD or video editing in HD1080, they will care about performance. I can't imagine your AM3 board is going to be obsolete in 10 years time. I am still running Opteron 940socket Italy 290 cpus and boards for doing CAD work because the improvement in core speed has only been about 2% per year. AMD and Intel have had to rely on gimmicks such as quad cores increased cache on the cpu and other gimmicks to increase performance. The laws of quantum mechanics and heat transfer pretty well limit any major advances in core performance at this point.
The bigger question is whether or not the desktop is still relevant. For the general public, laptops and hand held devices will be more than adequate. The six core 1035 for $100 is probably more reasonable if you already have an AM3 board and a real need to upgrade. The projected path forward for both AMD and Intel desktop/workstation cpus are not really what the ordinary user will need.
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