Intel Core i5 & i7 Sandy Bridge Overclocking and Feedback

[cadaveca]

trrd, twr, and CAS latency could all probably drop down one.

 

[LAN_deRf_HA]

Unfortunately I can't get cas to budge. The best I can manage is to get it to start loading windows but it will crash. I've tried all the way up to 1.2 vccio and 1.7v on the ram but it just won't happen. I assume it's very platform limited as I've seen these sticks do cas 6 at 2000mhz.

 

[cadaveca]

twl, not CAS.

 

[LAN_deRf_HA]

Ah I see it now. Wish the efi listed timings by the abbreviations...

 

[cadaveca]

Might wanna try dropping TFAW a few too.

 

[johnnyfiive]

Building up my buddys insane build. 580s in tri sli, 2600k (at 5ghz for benches), Z68-UD7, 1200w Corsair, OCZ Agilitys in raid 0, Thermaltake level 10, and tons of other crap. This isn't fully stable at 5Ghz, just stable enough for some runs. I'll be leaving this at 4.8 once I'm done playing at 5ghz.

3DMark 06 run with 580's at stock clocks. This bench is all CPU anyway, so I wasn't expecting a miracle with this one.

3DMark 11 run with 580's at stock clocks.

Heaven DX11 2.5 - I ran it at the native res on this monitor (1680) with all the settings maxed out.

I'd say this is pretty slow... lol (Crucial SATA 6GB/s ssd's are on the way to replace these btw.... hes insane.)

Some pics of it in action.

 

[Deleted member 74752]

Testing a Frio cpu cooler for a member who is thinking of buying one for his 2500K. I have not used a air cooler in so long I can only guess if this is about normal temp wise. Oddly 1.45 vcore ran cooler than 1.44 vcore...

 

[sneekypeet]

mid 80s seems about right with your voltages

 

[xkm1948]

Here is my miniITX build for my In-Laws:

I OCed the 2500K to 4GHz on Asrock's miniITX Z68 board. This board is the best I can find on newegg that is both a ITX and a Z68. Mem is Kingston DDR3-1600 8GB. Using Thermalright AXP-140. Max out temp is around 50~54 for all four core. It is better than I expected. I left all the other settings at default.


I never think it is possible to stuff a huge AXP140, a full size 6870 and a large ATX PSU into one small ITX case. Yet not only did I stuffed them in, this LianLi case provides pretty decent airflow.

 

[t_ski]

I have that case, but mine is black and it houses my home server.

AMD 1035T
Zotac mITX 880G
2x2GB DDR3 1600
4x1TB Seagate HDD's
Silverstone Strider modular PSU

I'll have to look into that AXP...

 

[erixx]

peeps! this thread is about OC'ing not cases and what not! (but nice builds, yes

 

[johnnyfiive]

My pics inspired moar pics. [0_o]

 

[jacob90]

i overclocked my i5 2500k cpu to 4.3ghz, set the vcore to 1.295 and tested by using Far Cry 2 benchmark tool in 15 loops.

but during the benchmark, i get a BSOD saying System encountered uncorrectable hardware error. 0x00000124 error code.

what does it mean?

the vcore is not enough at that clock???

i set the vcore to 1.295 and everything else on default plus 43 multiplier.

 

[sneekypeet]

i overclocked my i5 2500k cpu to 4.3ghz, set the vcore to 1.295 and tested by using Far Cry 2 benchmark tool in 15 loops.

but during the benchmark, i get a BSOD saying System encountered uncorrectable hardware error. 0x00000124 error code.

what does it mean?

the vcore is not enough at that clock???

i set the vcore to 1.295 and everything else on default plus 43 multiplier.

Answered in your other thread

 

[heky]

Yes, the 124 error is usually vcore related. Try upping the voltage one step, and keep testing stability. Also keep an eye on the temperatures.

 

[jacob90]

heky: is having a vcore of 1.290 for 4.2ghz on i5 2500k normal or not?

because anything less than that, it seems to be unstable for me during testing. i get that BSOD.

but how come people with the same CPU claim they can go to 4.4ghz or more at stock voltage no problem?

is my motherboard crap?

 

[heky]

Every chip is different. I could have the same board model and processor model, but had different results in voltage and overclock.

 

[jacob90]

is it normal to have a large difference in voltages or small compared to others???

 

[erixx]

Disregarding other problems (there can be many) the difference should not be huge, but small. Decimal.

I am running 4400 at 1,3 v and idling at 1600 mhz at 1,1 v
(not testing, but 24/7 stable that is)

 

[johnnyfiive]

It's really a shame that my CPU has a multiplier wall at 50x. I'd push the bclk, but.. I ain't THAT crazy.

 

[dj-electric]

Got my 2500K handpicked out of alot of CPUs, from a quick test reaching 5GHZ under 1.4v was an easy mission, soon i will replace my MSI GD55 garbage mobo for a P8P67PRO from asus and get a new MCP655 swifty pump. i will update with the result (hoping for 1.36V 5GHZ stable)

 

[PaulieG]

Got my 2500K handpicked out of alot of CPUs, from a quick test reaching 5GHZ under 1.4v was an easy mission, soon i will replace my MSI GD55 garbage mobo for a P8P67PRO from asus and get a new MCP655 swifty pump. i will update with the result (hoping for 1.36V 5GHZ stable)

Umm, you need to post some screenies, or it didn't happen.

 

[heky]

It is possible, becouse he has a MSI board, and these boards raise the voltage under load. So he can have it set to 1.36v in bios, but he is really pushing 1.42v under load.

 

[cadaveca]

That's not something MSI-specific...many many boards will do that dependant on settings.

I was helping Blueflannel the other day with his OC...his ASUS was jumping up to like 1.5v.

 

[heky]

Sure, but i know exactly how the P67A-GD65/GD55 work, becouse i own one. And there is no way to configure it to not raise the voltage under load.