- Joined
- Apr 19, 2012
Stability testing nowadays takes ~20m on IBT AVX very high 10 runs for any non anal everyday overclocker.
Again nowadays getting to 4.7ghz is fairly easy to most 83** on air, passing that is the tricky part and for most cases will require an AIO or custom loop (I pull 4.7ghz ~55c, 4.8ghz ~60c on a Noctua NH-D15 on all 8 cores).
AFAIK and was told by the almighty's here, the 95** is simply a better binned overclocked 83**, so I assume that at 4.7ghz both CPU's will do roughly the same on any bench ?
Following that reasoning, can we run the 9590 on air at 4.7ghz with the same Noctua or do you need water ? This is the crux of the matter, correct ?
If this post had made better sense in light of what "Binning" actually means, it would produce some real results to the argument that a FX-8350 is essentially the same thing as a FX-9590.
Which it's not.
AMD tests these processors. For multiple things, one being stability at given x clocks and x voltage. Since FX-8350's didn't meet requirements to be "stable" at 4.7ghz.... they where binned much lower. Thus the need for testing. Essentially Our testing doesn't meet manufacturing requirements on what Silicon will do stable.
We can test for stability to liking. 20 minutes IBT is a Joke in my book, not meeting my personal requirements of a minimum of 8 hours stable crunching P95 and OCCT Linpack back to back and then a couple hours worth of gaming after wards. I even consider 2 hours P95 stable somewhat of a Joke. It's only running a calculation stressing a portion of RAM a lot of CPU resources and nothing more.
Back in the day, PiMod could take hours. That was true stability testing as single cores where ramped 100% during the test.
(I pull 4.7ghz ~55c, 4.8ghz ~60c on a Noctua NH-D15 on all 8 cores).
What temp? Core temps? Cpu socket temps? Is this only 20 minutes? That's quite a short test to boast stability.
Following that reasoning, can we run the 9590 on air at 4.7ghz with the same Noctua or do you need water ? This is the crux of the matter, correct ?
AMD states themselves to Use liquid cooling. Since AIO is soo mainstream even possibly over air cooling now, the question is null.
The issue is people expect to overclock the chip while it's already at that speed your Noctua may or may not handle under x and y circumstances. But then I hardly believe a Noctua can handle any FX processor at 1.5v and 5ghz any ways, the stretch is always for a higher mhz.
There's only ONE FX-8320 that I am aware of stable at 5.2ghz. Mr. Scott has it and is de-lidded as mine is. For the sake of truth, that Cpu is not stable on ambient 75f air temps on liquid cooling. I should know, it was tested with the same board he was also sent with. I had a CB issue with bios, he had overcome with a bios tweak of some sort. No business of mine what's done with after it leaves my hands, but I know the truth on most FX processors.
Phenom II hit or miss 4ghz stable and up and FX hit or miss 5ghz stable and up. Depends on leakage, cooling, voltage used.... but in most cases can replicate any ones overclock with similar cooling and clocks/voltage with my very own setup.
But because we are talking about stock processors and then overclocked...... My FX-9590 with the mods and adequate cooling boasts clocks at 5.2ghz daily. 20 minutes anything os no problem. Game for 8 hours straight no problem.
Now take look at Mr. Eagle there. Great guy!" Always in search for a better temp applying all kinds of modifications and getting results in the meantime.
However, if we take a stock FX-8350 and pit it up against a stock FX-9590, set cooling aside, the FX-8350 is a pony.
In the end, it's always a struggle with cooling... Your Max clocks are still 200mhz less than a stock FX-9590 turbo frequency.
You stability test.... I go off gaming.
Here is highest reported Liquid cooling speed at HWBot with FX-9590 http://hwbot.org/submission/2784297_shrimpbrime_cpu_frequency_fx_9590_5718.05_mhz
Here is highest reported clocks at HWBot with FX-8350 liquid cooling http://hwbot.org/submission/2790171_tt_chuchu_cpu_frequency_fx_8350_5709_mhz
The 8350 used less voltage but gained no more mhz than the 9590. What gives? The 8350 had tens of submissions while the 9590 had maybe 10 submissions on the same cooling. Comparison is null.
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