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[Official] - Xeon X5660-X58 Review & Discussion [and Xeon L5639 benchmarks inside] - Page 733

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post #7321 of 7924
Quote:
Originally Posted by DRKreiger View Post

It was supposed to say "PSU". was typing off of a tablet. autocorrect bane of my existence

Hey don't bash autocorrect, its the only thing that allows us to get a lil too wasted at the pub and still text our wives apperantly sober o-o

In all seriousness, my power supply change massively yielded more stability with my 12V rails. A VOM doesn't make it fun to check voltages, try a digital(or analogue, yolo) scope like my HP 54111D. Tells a much bigger story smile.gif my old PSU left ripples everywhere you could look, under load, might as well have been music(wonder where could whine comes from????)
Edited by GENXLR - 8/4/16 at 10:03am
post #7322 of 7924
Quote:
Originally Posted by GENXLR View Post

Hey don't bash autocorrect, its the only thing that allows us to get a lil too wasted at the pub and still text our wives apperantly sober o-o

In all seriousness, my power supply change massively yielded more stability with my 12V rails. A VOM doesn't make it fun to check voltages, try a digital(or analogue, yolo) scope like my HP 54111D. Tells a much bigger story smile.gif my old PSU left ripples everywhere you could look, under load, might as well have been music(wonder where could whine comes from????)

What PSU do you have now? Makes me curious about my recent PSU purchase.
     
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post #7323 of 7924
Quote:
Originally Posted by GENXLR View Post

Hey don't bash autocorrect, its the only thing that allows us to get a lil too wasted at the pub and still text our wives apperantly sober o-o

In all seriousness, my power supply change massively yielded more stability with my 12V rails. A VOM doesn't make it fun to check voltages, try a digital(or analogue, yolo) scope like my HP 54111D. Tells a much bigger story smile.gif my old PSU left ripples everywhere you could look, under load, might as well have been music(wonder where could whine comes from????)

I remember when I switched from a BFG 1200W to my ST1500W.... I could lower voltages across the board on my x58 classified setup lol. I couldn't believe the difference in stability. I know they are not very efficient by today's standards but I have two of them powering my SR-2 rig now.
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post #7324 of 7924
I recently have been talking Kana's ears off about my recent PSU purchase and the stability issues I've been going through. My old PSU doesn't have as good of regulation as my new one. My main concern is the 12v. This actually threw me for a loop as I was thinking I would be able to lower my cpu vcore for my 4.51GHz overclock. The other half of the story is that I didn't stability test enough with my old PSU. I thought I was able to lower my CPU Vcore in bios from 1.356v to 1.350v Simple, right? But when you check the voltage terminals for various load levels that goes out the window. Idle, IBT & P95, Real Bench, & gaming all produce different cpu vcore loads on my rig. 3 days in on stability testing I realized the difference between the PSUs. I'm still not convinced on the stability of it right now with it's current bios settings but I have until the 20th to test it out and see. What I did find after comparing the two with the same tests was that the new PSU did indeed have better regulation, especially on the 12v (not a scientific examination, only via digital multi-meter on the vcore terminal) I didn't like how IBT was pulling 1.364v while running IBT VS 1.360v on the old PSU. That's what indeed threw me. Plus the fact that I didn't have the same dimm voltages, which were lower so this produced some stability test failing across all tests (IBT, P95, RB) After going back and stability checking the old PSU I jotted down the volts under idle, various stability tests, and gaming. It became apparent that 1.350v in bios wasn't cutting it and that I had to settle with 1.356v in bios and the 1.364v IBT load. Correct me if I am wrong but I've concluded that the 1.364v IBT load is because of better regulation. The 12v ripple suppression is 9mV while the regulation on the cold and hot is 3% then 2% respectively. This might explain why when starting IBT the vcore goes from 1.362v to 1.364v, again correct me if I am wrong.

So far things have been stable @ 4.51GHz, 3.25GHz QPI & Uncore, 1800MHz memory speed. What's different is I was previously pushing 4GHz QPI, and 3.7-8GHz Uncore. So that still leaves some questions out in the open because it was understandably stable with my old PSU.
     
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post #7325 of 7924
These volts measured also will vary depending on how your DMM actually reads the voltage - there is always noise, even with DC measurements, so the DMM must decide what to actually display from the data - differing amounts of noise may change the value displayed...
post #7326 of 7924
Heat also plays a part. The hotter a core will get the more volts it will pull. (according to Idontcare, on the anandtech forums..)
     
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post #7327 of 7924
That is true, and true of LED's or other semiconductor devices too.

Well, actually what happens is the power consumption will increase, so if you have an offset voltage function then the applied voltage will rise. Otherwise, with no offset or VDroop compensation then the voltage will fall, as the current drawn increases the VRM's output will begin to droop.

Anyway, yes it matters smile.gif
Edited by gofasterstripes - 8/4/16 at 1:49pm
post #7328 of 7924
For the same price at 200 euros:
Bundle 1
- Rampage II extreme
- i7 920 D0
- 12 gb (3x4) Corsair Dominator 1600 cl8

Bundle 2
- P8Z68-V/gen3
- i5 2500k
- 8 gb (2x4) gskill Ripjaws X 2133

What bundle gives the best gaming performance now and for the next Year?

Z68 has USB 3 and Sata 3.
Has better slot spacing for crossfire
2500k overclocks higher.
Z68 can take 3770k in the future.

i7 920 has hyper threading.
X58 can be upgraded to xeon x56** for 6 cores and 12 threads.
X58 runs triple channel memory.

2500k has better cores and higher IPC.
3770k even more.
Z68 only runs dual channel memory but clocks it higher.

With all these arguments, it a tie and a hard decision.
Anyone care to input?

Usage is gaming.
Monitor is 1080p.
Gpu is 280x.

Cheers!
post #7329 of 7924
For gaming it looks like a coin toss to me. For general computing I would want the SATA 3 and USB 3.0 ports with better IPC per core and faster Mhz RAM. But if threads matter, then the x58 with a Xeon will kill it. VERY difficult choice there bud, but I would lean towards the newer gen myself.
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post #7330 of 7924
With 12GB and a 5650 the X58 ($250) would be better for work, in this case.

As before - 5650 is better value as up upgrade, 2500k better from scratch.

IMHO
Edited by gofasterstripes - 8/5/16 at 3:50am
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