I9 9900k

Nickolp1974 · 17 Nov 2018 at 11:29

Distracted said:
@Nickolp1974 are you going for 5.2 as your daily oc?

No not really, just seeing if it can be 100% stable and within acceptable temps <85c. Bit more testing to do but its looking highly possible. for me personally 5ghz is plenty for gaming etc.

Distracted · 17 Nov 2018 at 11:40

When the cpu is idle it drops to 800mhz or there abouts, so idle temps for every 9900k are going to be similar arent they?

Unless you have that setting disabled.

Distracted · 17 Nov 2018 at 12:18

Nickolp1974 said:
No not really, just seeing if it can be 100% stable and within acceptable temps <85c. Bit more testing to do but its looking highly possible. for me personally 5ghz is plenty for gaming etc.

That 85 degree figure is only when stressing the CPU isn't it? You wouldnt hit that often during everyday tasks unless your work software uses AVX?

Nickolp1974 · 17 Nov 2018 at 12:36

Distracted said:
That 85 degree figure is only when stressing the CPU isn't it? You wouldnt hit that often during everyday tasks unless your work software uses AVX?

yeah true but my cooling is not normal, basically a pump and a bucket of water. the previous test was done with the water just at ambient, pretty much like an AIO, room temp. Downside to bucket, it gets increasingly warmer. Upside, i can use tap water, about 7c and add ice, so i can get down to about 0c

moorhen2 · 17 Nov 2018 at 12:38

So I have decided to change tack for now, wanted to see what the lowest voltage this chip requires to run all cores at 50ghz, something I have always done for my chips, quick 15 mins stress test in Realbench with 1.210v vcore in bios, same LLC7, under full load vcore was 1.154v and maxed at 1.199v. Not bad. Will be running the stress test for longer today to see how we go. Tried 1.200v but got the dreaded GSOD. But onwards and upwards as they say, lol.

Nickolp1974 · 17 Nov 2018 at 12:43

@moorhen2 thats a nice CPU you have there and i'm sure would be great running at -196c! did you say it was an oem?

moorhen2 · 17 Nov 2018 at 12:52

Nickolp1974 said:
@moorhen2 thats a nice CPU you have there and i'm sure would be great running at -196c! did you say it was an oem?

Thanks, yes a tray/oem from OCUK.

Sc00p007 · 17 Nov 2018 at 13:47

moorhen2 said:
So I have decided to change tack for now, wanted to see what the lowest voltage this chip requires to run all cores at 50ghz, something I have always done for my chips, quick 15 mins stress test in Realbench with 1.210v vcore in bios, same LLC7, under full load vcore was 1.154v and maxed at 1.199v. Not bad. Will be running the stress test for longer today to see how we go. Tried 1.200v but got the dreaded GSOD. But onwards and upwards as they say, lol.

Seems to be quite the variance in temps to vcore with 9900k. Interesting that your temps are very similar to mine at 5.0 but at 0.1v lower vcore.

Distracted · 17 Nov 2018 at 14:11

Is anyone here already using a delidded cpu?

moorhen2 · 17 Nov 2018 at 14:16

Distracted said:
Is anyone here already using a delidded cpu?

Deliding these chips gains you very little temps wise, there's a lot of info around the net about this. Intel should have gone back to solder TIM ages ago in my opinion.

moorhen2 · 17 Nov 2018 at 14:21

After more testing for lowest vcore at x50 I had to up my core voltage by .5v to get Realbench Stress test to pass a 30 minute run, so vcore in bios was 1.215v, under full load this was 1.164v, so quite happy with that. So some kind of stability at a fairly low voltage, but will keep testing.

Distracted · 17 Nov 2018 at 14:30

moorhen2 said:
Deliding these chips gains you very little temps wise, there's a lot of info around the net about this. Intel should have gone back to solder TIM ages ago in my opinion.

I've seen the various reports on delidding from der8auer and silicon lottery, but i would be interested to hear if anyone has a delidded chip and how it clocks.

What would be even better would be to know benches, temps and clocks before and after to see if all the chips are seeing the same temp drops with delidding or if there is some variance (outside margin of error) in the quality of the STIM.

I agree with you that the gains don't seem great, and that STIM is an improvement.

Distracted · 17 Nov 2018 at 14:31

moorhen2 said:
After more testing for lowest vcore at x50 I had to up my core voltage by .5v to get Realbench Stress test to pass a 30 minute run, so vcore in bios was 1.215v, under full load this was 1.164v, so quite happy with that. So some kind of stability at a fairly low voltage, but will keep testing.

That sounds like a really good cpu you've got.

moorhen2 · 17 Nov 2018 at 14:59

Distracted said:
That sounds like a really good cpu you've got.

Thanks, yes not too shabby.

Well I wanted to know how good the IMC is on my silicon, and not too bad I must say, I have a very good set of ram, Samsung B dies, a 3200mhz CL14 kit that will do 4133mhz CL16 on my Apex board, set timings and voltages manually and booted straight up.

Nickolp1974 · 17 Nov 2018 at 15:39

with delid and lap should net around a 10c drop, for me my scaling is quite linear so another multi higher should be possible, so 5300mhz 24/7 and 5500mhz benchable.

so is it worth it, probably not for most, but for some, yes.

Distracted · 17 Nov 2018 at 17:29

Nickolp1974 said:
yeah true but my cooling is not normal, basically a pump and a bucket of water. the previous test was done with the water just at ambient, pretty much like an AIO, room temp. Downside to bucket, it gets increasingly warmer. Upside, i can use tap water, about 7c and add ice, so i can get down to about 0c

Pics!

moorhen2 · 17 Nov 2018 at 17:32

After extensive testing at 50ghz, this chip will run quite happily at 1.164v under full load, max was 1.199 with my above bios settings of 1.215v set in the bios, LLC7, cache at 45 for now.

So now I am going back to my core overclocking, 52 was giving me a bit of gip temp wise.

Distracted · 17 Nov 2018 at 17:35

moorhen2 said:
After extensive testing at 50ghz, this chip will run quite happily at 1.164v under full load, max was 1.199 with my above bios settings of 1.215v set in the bios, LLC7, cache at 45 for now.

So now I am going back to my core overclocking, 52 was giving me a bit of gip temp wise.

How far did you take the voltage for 5.2 before you stopped?

Distracted · 17 Nov 2018 at 17:39

Sc00p007 said:
Had a little play last night.
2x360 + 240 900rpm, 2080ti shares.
5.1ghz @ 1.309v
Hottest core
1hr OCCT large 65
Realbench 30 mins 74
~1.5hr Prime AVX 88

One thing annoying my ocd is the difference between hottest and coolest core. 88 prime but coolest 80. Reseated but nothing changed. But all in all, I am very happy with my OC.

How is the overclock? Still stable? Are you keeping it at 5.1 24/7?

moorhen2 · 17 Nov 2018 at 17:46

Distracted said:
How far did you take the voltage for 5.2 before you stopped?

1.350v if I remember correctly, it was the temps getting up towards 90c in the Realbench Stress tests that I was not happy with, although Intel do say the100c Tjunction can be upped to 115c, but I would not be happy getting up around those temps at all.