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XXHighEnd > Ultimate Audio Playback > Playback Tweaks and Source related subjects > CPU models sound different
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Author Topic: CPU models sound different  (Read 5736 times)
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Nick
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« on: April 28, 2015, 09:48:11 am »
Heres somthing that might be of interest. I have had the opportunity to test 2 different CPU models in the same extreamly transparent PC.

The CPUs listened to are Intel 2011 socket types, models 3930k and 4930k.

They sound very noticably different to each other. Both sound good, but the difference is distinct, little like choosing between two good valves in an amp.

The 3930k sounds richer with fuller tone and quite a lot more base strength. Highs are not quite so prominent.

The 4930k sounds more neutral, but lacks a slight amount of bass weight and the tone is cooler. It does time very well with good rhythm.

Both are good and in an ideal world you could use the 3930 to balance a forward sounding system or the 4930 to bring out presence in a laid back system. The question now is why, here there is a difference in spec that might be relevent that I may be possible to test.  Interesting stuff but sort of hard when you think we mostly buy CPUs blind to the "sound" they produce.

Regards,

Nick.
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PeterSt
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« Reply #1 on: April 28, 2015, 10:10:04 am »
Hey Nick,

As far as I know by heart only the frequency of the 4930 is a bit higher. But that can make a world of a difference (think matching).

Peter

PS: Again, by heart.
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Nick
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« Reply #2 on: April 28, 2015, 11:52:49 am »
Quote from: PeterSt on April 28, 2015, 10:10:04 am
As far as I know by heart only the frequency of the 4930 is a bit higher. But that can make a world of a difference (think matching).

Peter hi,

The 4930 is a little faster, it could be that.

When I looked at the spec sheets I think there were also some differences in the I/O standards supported it might also be there.

It would be good to get some sense of what is going on, if this is not possible then CPUs might need to be selected like favorite sets of valves , only a bit harder to swop Happy
Regards,

Nick.
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Audio PC

C621 motherboard, Xeon 40 thread CPU.

 w10 14393 RAM OS => XX V2.10 / adaptive mode / XX buffer 4096 / NOS USB driver v 1.02 buffer 16ms / Q1,2,3,4,5 = 10,-,1,1,1 / xQ1 =15 / unattended / SFS 0.69Mb / memory straight continuous / system clock 15.0ms / Threadprio RealTime / Playerprio Low / CPU scheme 3-5 / 16x Arc Prediction / Peak Extend off / Phase alignment off / Phase off  / XTweaks : Balanced Load 35 / Nervous Rate 10 (or15) / Cool when Idle n/a / Provide Stable Power 0 / Utilize Cores always 1 / Time Performance Index = Optimal / Time Stability  On =>  Lush USB cable => modified NOS1 USB DAC => no pre amp => Orelo active horn loudspeakers with modified bass channel DSPs.

Music server: X99, Xeon 28 thread PC.

System power two 3kva balanced tranformers with dedicated earth spur.
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