I'm trying to get my 1090T at 4.0GHz, first time overclocking, need some help!

[OCGuy]

As Zap mentioned, you are attempting to reach a certain number for your chip, instead of letting your chip tell you what number it can reach under "acceptable" voltage.

 

[jacktesterson]

what temp does it have right when it fails OCCT after 5ish minutes?

Its around 44 according to Asus Probe II CPU Temp (not core temp)


I think my issue is with my Vcore and my motherboard. From what I've read its called a "Vdroop". When I go any higher than my current Voltage of 1.3875, The "drop" gets pretty severe....

For example, with a 1.45v Vcore, Under load I'm actually at 1.34v according to all my software suites, but at idle, my vcore is at 1.45. The lower I set my vcore, the lower the Vdrop is.

Could this be the main issue with not reaching 4 GHz plus for 24/7 use?

 

[jacktesterson]

Could somebody who knows the 1090T BE tell me all the Stock Voltages for CPU-NB, Vcore, HT Voltage, etc. Also HT Frequency and NB frequency...

I've only played around with vcore and setting the dram at 1.6v @ 1333 and playing with the multiplier. Everything else has been left at "default", but my bios doesn't tell me the default values.

Should I be messing around with the other voltages to see if I can get to 4?

Also my ram is a 1.5v kit, but under CPU-Z is says for 1333 its 1.6v, with everything under 1.5. Is this correct?

 

[xd_1771]

nVidia-chipset, AMD-socket boards are known for immense v-Droop.
Stock voltages are as follows:
CPU-NB: 1.15
VCore: ~1.3 (might depend on the chip)
HT voltage: 1.2
Ht frequency: 2000 (keep it there, increasing apparently has worse results)
NB frequency: 2000

I have no idea why your motherboard is setting DRAM voltage to 1.6 despite the 1.5V setting in your motherboard; my mobo along with some other AMD mobos have a 1.6V DRAM voltage minimum (for DDR3) though. I don't think 1.6V will pose any problem for your RAM.

 

[jacktesterson]

Thanks, I tried to revise my o/c over the weekend with no luck. The v-droop which I never noticed before is what's killing me I'm sure .

I'm going to stick with 3.8.

I went with the board with nvidia 980a chip as it was only SLI board could get for my 470's and I wanted to try the 6 cores out

 

[jacktesterson]

Well being persistant I went to 1.485 tonight for fun, and it passed 4 hours Stable at 4.0GHz. (which says a lot for stable system IMO)

It previously failed on this test at 1.47.

Is 1.485 ok for 24/7 use?

The highest CPU Temp during the test was 48 with my watercooling. (core temps were around 31-33)

 

[jacktesterson]

Ran overnight with prime 95 no problem.

All I needed was that last bump in voltage, plus I bumped the vdda to 2.6 and it reduced my vdroop too. ASUS just released a new bios last week I noticed and I upgraded and still no L.L.C.

My max temps are high 40's and core temps high 30's. I should be safe here for 24/7 use right?

I may try tonight to see If I squeak anymore 🙂

 

[exar333]

At 3.8GHz with my Coolit Eco Watercooling my CPU temp maxes out at 46 during OCCT stress testing with CPU at 1.3875

With regular use I never see it over 36 and at idle is sits around 29. (CPU, not core, core temps idle around 19-20)

Since the AMD Spec sheet says 1.4v, I am a little hesitant to go over. I am just wondering if there is anything I'm not doing right. I really am just playing with the vcore and the multiplier with the ram and HT set to default. (1.5v and 2000MHz)

http://products.amd.com/en-us/Deskt...2=&f3=&f4=&f5=&f6=&f7=&f8=&f9=&f10=&f11=&f12=

Thats really low for a core temp. What are you using for measuring your temps?

 

[jacktesterson]

CPUID Hardware Pro, ASUS Probe II and OCCT all read the same. Screenshots to come


4.1 GHz was stable on the same settings for 2 hours! Will run Prime95 tonight and end it here if passes. I don't want to stress it anymore! I'm happy!!

 

[jacktesterson]

I am in Canada, and have my downstairs finished for "my stuff", so I have my basement with all my electronic goodies. I like to keep it cool around 60-70 down here, and also theres no humidity. I am also running 3 x 240mm Case Fans and 3 x 120mm fans, plus a Coolit Eco 120mm Radiator/Watercooling setup which works AWESOME.


Screenshot @ 4.1 GHz Idle (Core Temps under 20 idle, CPU Temps in 20's)

Screenshot @ 4.1 GHz 100% Load (Core Temps High 30s. CPU Temps High 40s, Never seen higher than 48)

Blury Iphone shot of Coolit Eco

Blury iphone shot of 27" Monitor and Case

I can say I am pretty proud of my machine. Nicest build I've ever done for myself.

 

[muskie32]

Congrats on getting in the 4ghz club 😉

 

[jacktesterson]

Thanks!

 

[jacktesterson]

In going to add another 120mm fan this weekend to make it push/pull setup

 

[muskie32]

lol... Right now i have a i7 875K and am struggling to get to 4ghz... I i am using push Pull in a DF-85 with a h70... I almost fell like i should have gone 1090T :/