**Official e8400/e8500 Retail OC Thread

[HDCHOPPER]

Yes

But its logical, e.g. my C1 whit 1.25VID runs 1.3V just ~50c and i still got 4 core that make heat!

I need high volts for nice clocks, E0 owners needs lower volts, but they top out usually becouse of too high temps

been noticeing that myself too

[anzial]

my room temp is about 33 - 35'C >_<"

Get AC

[19*12 gamer]

Im gonna get this RAM; Corsair TWIN2X4096-8500c5 to try to get my Q827Axxx past 460fsb-wall. (my ram dont like it now)
specs:
1066Mhz//5-5-5-18@1.8
1140Mhz//5-5-5-15@2.1 (tested bij ASUS http://www.corsair.com/testreports/r...tner_id=238134 - These r the 4th mem)

Only nice ram on stock in local store, are these good? Could not find true 1.8v 1066 555-15 dimms out here...

[Dua|ist]

so you are saying that E0s heat up more than C0 with less volts?

True, the difference is sometimes about 5C or even more (@ same volts), but as it was already mentioned it's quite logical. The newer stepping probably wastes less energy by consuming and outputting as heat same energy (thus same clocks & same temperatures) at lower volts. But that's just my humble theory.

[KeZzZu]

Hello just received these

DFI lanparty JR
E8500

patch q822a466

retail package says max 1.26 vcore good or bad?

[KeZzZu]

ughh sorry for double post

[OCX600RR]

Just got one off of eBay for $150. Q825A652...hoping its a winner!

[Carmaine]

Just bought the E8400 this week and made a quick overclock so far.

4.02Ghz @ 1.29Vcore (disregard the voltages in Speedfan)
ALL AIRCOOLED


I'm hoping to gun for around 4.5 - 4.6. =)

[OCX600RR]

Howcome it's showing 1.472v on the core in CPU-Z as well?

[carepolice]

Howcome it's showing 1.472v on the core in CPU-Z as well?

Yeah its true!

[laragirl83]

Just bought the E8400 this week and made a quick overclock so far.

4.02Ghz @ 1.29Vcore (disregard the voltages in Speedfan)
ALL AIRCOOLED


I'm hoping to gun for around 4.5 - 4.6. =)

U r killing that CPU for sure...
everything above 1.4250V real voltage is a no-go with air cooling, no matter what kind of...

Not to mention degradation, at this voltage.

[Carmaine]

U r killing that CPU for sure...
everything above 1.4250V real voltage is a no-go with air cooling, no matter what kind of...

Not to mention degradation, at this voltage.

That is what's been plaguing my mind since I bought this processor.

I'm recently still running on an old board (DFI INFINITY P965-S) which was
flashed to it's newest BIOS for 45nm compatibility. For that overclock, the
voltage in BIOS is 1.29, but during windows, cpu and speedfan, are at
1.46-47.

Initially, when I increased the BIOS voltage to 1.21V, I was able to not only
boot the computer, but was also able to overclock it to a stable 3.81Ghz.
However, on cpu-z and speedfan, it tells me the voltages are at 1.36-37.


I recently created a thread earlier prior to posting these results explaining my
dilenma regarding this situation.
http://www.xtremesystems.org/forums/...d.php?t=204776
Any more input is appreciated. =)

[Dua|ist]

Got an E8500 E0 some time ago. Batch Q820A925, one of the earliest. VID 1.25V. Both sensors get stuck @ 36C (still way better than previous E8400 C0 with temps like 32/19 and 10C difference under load ).

Currently running 506 x 8,5 = 4302, vcore under load 1.344V. Very hot compared to C0 8400.

Finally some time for LinX to do its job. Temps are insane though (~75C), and no Thermalright to be found anywhere around.
Pics:

Just a quick testing so far.

Howcome it's showing 1.472v on the core in CPU-Z as well?

It's a DFI board with 965 chipset. And CPU-Z isn't perfect. Looking at what Speedfan shows on most of voltages one can assume CPU-Z is wrong too.

[HDCHOPPER]

Just bought the E8400 this week and made a quick overclock so far.

4.02Ghz @ 1.29Vcore (disregard the voltages in Speedfan)
ALL AIRCOOLED


I'm hoping to gun for around 4.5 - 4.6. =)

disregard ..ok may as well shoot for 5.0

[OCX600RR]

Anyone have a Q825 E8400 yet? I got one off of eBay but it wont be here for another days. Haven't seen the Q825 in the XLS file so just wondering..

[bonzo_catalin]

E8400 Q745A822 owners around ?

[Godmyster]

Am i the only one here where my vid is below 1.25v ? My CO the vid says 1.21v

What kind of cooling you using fo your 8400@4400?

[19*12 gamer]

@Dua|ist; My E0 runs very cool on 1.30V on Air 42 degrees C max stressed(4.2Ghz).
Xigmatek s1283 cooler.

Im just stuck there but i can run Bios stable @ 7*572FSB
Anyone have suggestions or is there another reason I can't oc more?
settings:
http://www.xtremesystems.org/Forums/...79580&page=286

[anzial]

@Dua|ist; My E0 runs very cool on 1.30V on Air 42 degrees C max stressed(4.2Ghz).
Xigmatek s1283 cooler.

Too many variables b/n you and him, and he wasn't comparing his cpu to other E0s but to C0 e8400 he had previously, so you data is really doesn't tell him or anyone else much. If you were to test a C0 cpu, then we'd be talking about something

[misho]

Anyone tried ordering from Tankguys to Canada using google checkout???
Because when I do it I get a message in google checkout:

"TankGuys Computer Parts does not ship to this address via Google Checkout"

I am in Toronto so...
How can this be fixed?
Should I just try ordering through the website and not google checkout?

[19*12 gamer]

Managed to get Orthos small FFT's stress test stable for 18+min @ 500*8.5 (stopped the test, all temps stay below 44degrees C)

My settings for that are:
Ai Overclock Tuner : Manual
CPU Ratio Control : Manual
- Ratio CMOS Setting : 8.5
FSB Frequency : 500
FSB Strap to North Bridge : 333
PCI-E Frequency: 100
DRAM Frequency: DDR2-1002
DRAM Command Rate : 2T
DRAM Timing Control: Manual
CAS# Latency : 5
RAS# to CAS# Delay : 5
RAS# Precharge : 5
RAS# ActivateTime : 18
RAS# to RAS# Delay : AUTO
Row Refresh Cycle Time : AUTO
Write Recovery Time : AUTO
Read to Precharge Time : AUTO

DRAM Static Read Control: disabled
Ai Clock Twister : lighter
Transaction Booster : auto (0-30, I dont get this, used to be relax and boost 0-7 on maximus bios)

CPU Voltage : AUTO //reads in BIOS/cpuz/cpuid: 1.304v
CPU PLL Voltage : 1.50 // 1.58v
North Bridge Voltage : 1. 51 // 1.51v
DRAM Voltage : AUTO // 2.1v
FSB Termination Voltage : 1.6// 1.5v
South Bridge Voltage : AUTO
Loadline Calibration : Enabled
CPU GTL Reference : AUTO //?
North Bridge GTL Reference : AUTO //and this (0.67*-0.62* = %?)
DDR2 Channel A REF Voltage : AUTO
DDR2 Channel B REF Voltage : AUTO
DDR2 Controller REF Voltage : AUTO
SB 1.5V Voltage : AUTO

CPU Spread Spectrum : Disabled
PCIE Spread Spectrum : Disabled

Tried 3 hours to get 500*9 working but could not boot windows no matter what, while 520*8.5 is able to boot vista and make screens but not stress the system...
EDIT: 500*8.5 is very stable and low temps after stressing with orthos entire night.

Anybody know why i cant go higher?

[politenessman]

so you are saying that E0s heat up more than C0 with less volts?

i dont know about that, but they do heat up more than a c0 with same volts, ie, add 0.15v to each and the e0 will run a good bit hotter. i have had about 10 c0 e8500 and 4 e0 e8500 and this has been true for all except my latest e0, which for some reason runs very cool - 52c at load 4650mhz, 1.38v. but the temp sensors are stuck at 39/41 in the down direction. but are accurate going up (checked with infra-red probe).

[fornowagain]

That's easily explained if the default voltage is lower on the E0's. The overclocked power used and hence temperature comes from the change or delta in the frequency and the voltage increase from stock squared.

[ssabripo]

this is awesome guys! I think I found the perfect combination of everyday usability 24/7 stable, and low power consumption!

I got 4.014ghz (446fsb x 9) @ 1.29Vcore in Bios.

my setup:
e8400 (i believe is C0 stepping)
Asus P5Q-E (1406 bios)
4 x 1gb Crucial Ballistix PC2-6400 (4-4-4-12)
Thermaltake 750W psu
Radeon X1900XT 512mb


I'm ran orthos for about 6 hours since I took the pics...and still counting (about 8 hours now). So far so good, but max temps at 58C. At idle, I'm at 34C

[LagunaX]

this is awesome guys! I think I found the perfect combination of everyday usability 24/7 stable, and low power consumption!

I got 4.014ghz (446fsb x 9) @ 1.29Vcore in Bios.

my setup:
e8400 (i believe is C0 stepping)
Asus P5Q-E (1406 bios)
4 x 1gb Crucial Ballistix PC2-6400 (4-4-4-12)
Thermaltake 750W psu
Radeon X1900XT 512mb


I'm ran orthos for about 6 hours since I took the pics...and still counting (about 8 hours now). So far so good, but max temps at 58C. At idle, I'm at 34C

Dude this is XS - go for 4.2ghz@ 1.328v-1.344v - you'll love the noticeably speed improvement and the energy costs will be neglible compared to everything else in your house.

BTW your chip can do it because it is an E0 stepping - cpu-z says so in your screenshots.