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post #81 of 86
And now you went Ad hominem, and no I won't follow that part. "Instructions per cycle under X conditions" is gibberish, If you want to narrow it down to ST workloads, use ST workloads (and even then IPC is always application specific). For cinebench 11.5 ST a 2600k has lower ipc than a 4670k, for cinebench 11.5 MT it has higher (it executes more instructions per cycle). It is not semantics, ipc is the wrong term.
Edited by Kuivamaa - 4/1/14 at 8:45am
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post #82 of 86
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post #83 of 86
If anyone can provide a single performance test that shows +30% performance scaling in a CPU bound real-time workload going from an i5 to an i7, or an FX-6300 to FX-8320, all other things being equal, then I will throw up my hands and admit defeat. I will conceded that the future is parallel and the FX architecture has the potential to be just as good in real-time workloads as an architecture with better single threaded performance.


I'll even extend that challenge to include ANY CPU vs ANY CPU within the realm of modern, in production options. If you can present ANY example of CPU performance scaling that is proportional to the increase in parallelism in a CPU bound real-time workload then I will admit that I am wrong on this matter. Until then I maintain that increasing parallelism is not as useful as increasing per-thread performance in these workloads.

Examples of ways to prove your case:

1. The FX-9370 and i7-4770 each represent approximately a 100% increase in compute performance from an i3-4130 garnered from parallelism. As is reflected in all non-real-time parallel workloads where these CPUs achieve ~100% better performance than the i3. If you can present 1 example of a CPU bound real-time workload where either the i7 or the FX chip are 100% faster than the i3, then I will have to admit that I am wrong.

2. All things being equal, an i5-4570 represents approximately a 50% increase in compute performance from the i3-4130 garnered from parallelism. If you can provide one example of a CPU bound real-time workload that performs 50% faster on the i5 than an i3, then I will admit that I am wrong.

3. An i5-4430 represents approximately a 100% increase in compute performance from from a Haswell Pentium garnered from parallelism. If you can provide one example of a CPU bound real-time workload that performs 100% faster on the i5 than an Pentium, then I will admit that I am wrong.

4. The FX-8350 represents approximately a 100% increase in compute performance from from an FX-4350, garnered from parallelism. If you can provide one example of a CPU bound real-time workload that performs 100% faster on the FX-8350 than an FX-4350, then I will admit that I am wrong.
Edited by mdocod - 4/1/14 at 12:08pm
     
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post #84 of 86
People have their preferences. Like when the P4 was killed by the A64 and the Pentium D was stomped by the X2 we had Intel Fanboys swearing their superiority over the AMD.

The Intel in unlimited budget form is better in benchmarks
post #85 of 86
Keep doing that. It is not about parallelization,intel, AMD,VIA or what have you, it is all about "ipc" being waved around like a feather duster. It doesn't mean single core/thread performance. Deal with it.
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post #86 of 86
Quote:
Originally Posted by Kuivamaa View Post

Keep doing that. It is not about parallelization,intel, AMD,VIA or what have you, it is all about "ipc" being waved around like a feather duster. It doesn't mean single core/thread performance. Deal with it.

In and of itself, it does not specify any conditions. I SPECIFIED THE CONDITIONS for the contrast I wanted to make, as such, IN CONTEXT, I was referring to a performance characteristic that could be described as "lightly threaded." I never implied that IPC has anything to do with single threaded performance, or multi threaded performance. The combination of "IPC" with the conditions, has meaning. It is not gibberish. We're saying the same thing, perhaps different ways, but all I perceive it as is an attempt to bury the original point.
Edited by mdocod - 4/1/14 at 12:50pm
     
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Toshiba THNSNH 19nm 256GB 1TB Spinpoint F3 WD RE3 1TB WD RE3 1TB 
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yes CM Seidon 120V SolydK OpenSuse 13.1 
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