• We've upgraded our forums. Please post any issues/requests in this thread.

What clocks and voltages are you running on your E8400?

Black Panther

Senior Moderator™
Staff member
Joined
May 30, 2007
Messages
8,957 (2.33/day)
Likes
2,166
System Name Great White Bengal
Processor i7 930 @ 4Ghz
Motherboard Gigabyte GA-X58A-UD3R
Cooling Scythe Yasya
Memory 12GB (3 x 4GB DDR3 Geil Black Dragon)
Video Card(s) Zotac 670 4GB
Storage eSata Seagate 2TB -- 240GB SSD Sandisk Extreme
Display(s) 27" 2560x1440 Dell U2711
Case NZXT Switch 810 White
Audio Device(s) Onboard sound & Z5500 Speakers
Power Supply Corsair 850W Gold
Mouse Asus ROG Sica
Keyboard Motospeed
Software Windows 10
#1
Says it all in the title...

Any info will help me since I'll be getting mine next Monday.

Thanks! :respect:
 
Joined
Jul 13, 2007
Messages
194 (0.05/day)
Likes
114
Location
St. Vincent and the Grenadines
System Name A work in progress...
Processor Ryzen 7 1700X
Motherboard ASUS ROG STRIX X370-F GAMING
Cooling LEPA AquaChanger 240
Memory 16GB G.SKILL TRIDENT Z RGB DDR4 3200
Video Card(s) MSI NVIDIA GTX 1070 SEA HAWK X
Storage Samsung 850 EVO 250 GB
Display(s) DELL U2515H
Case PHANTEKS ENTHOO PRO M ACRYLIC
Audio Device(s) SMSL Q5 PRO / PIONEER SP-BS22-LR Speakers
Power Supply EVGA SUPERNOVA 750 G2
Software Windows 10
#2
1.2875 V @ 4050 MHz.
Northbridge 1.12V
Cheapo Kingston ram @ 900 MHz with 1.98 V (5-5-5-18)

Yet to do real stability testing though and as always your mileage may vary. :cool:
 
Joined
Jul 18, 2008
Messages
2,866 (0.83/day)
Likes
697
Location
South Carolina
System Name KILLER
Processor Intel Core i7 4770K
Motherboard MSI Z87 G45 Gaming
Cooling Water Cooling
Memory 2x4GB Gskill 2400mhz
Video Card(s) EVGA GTX 780TI
Storage SSD Kingston 240GB
Display(s) 24" Asus 144hz
Case Cooler Master HAF
Audio Device(s) X-Fi Platinum
Power Supply Antec 1200 Watt Modular
Software Windows 7 64 Bit
Benchmark Scores 3DMark Vantage 51342
#3
Depends on if you get the CO or EO revision!!
 
Joined
May 31, 2007
Messages
1,051 (0.27/day)
Likes
71
Location
Port Fairy, Victoria, Australia
System Name Rampage 3.0
Processor i7 3770K 4.2Ghz
Motherboard ASRock Z77 Extreme 4
Cooling Corsair 110 (280mm rad)
Memory 16GB G.Skill Sniper F3-1866 10-11-10 CR1
Video Card(s) 2 X gigabyte 7970 ghz edition @1100mhz / 6000mhz
Storage samsung 500 GB + 128GM crucial M4 ssd
Display(s) LG IPS235P 23in IPS 1080p
Case corsair vengance c70 - white
Audio Device(s) On Board
Power Supply Corsair HX-750w
Software Windows 7 Ultimate 64 bit
#4
i have a E8600 so i asume they will be simlar @ stock (333X10) i run it at 1.05v and at 4.33ghz (433x10) i think its 1.3v much faster and i had to shoot the volts through the roof.. i forget what i needed for 4.7ghz

i will check when i get home if it a CO or EO revision and also double check the volts
 

Black Panther

Senior Moderator™
Staff member
Joined
May 30, 2007
Messages
8,957 (2.33/day)
Likes
2,166
System Name Great White Bengal
Processor i7 930 @ 4Ghz
Motherboard Gigabyte GA-X58A-UD3R
Cooling Scythe Yasya
Memory 12GB (3 x 4GB DDR3 Geil Black Dragon)
Video Card(s) Zotac 670 4GB
Storage eSata Seagate 2TB -- 240GB SSD Sandisk Extreme
Display(s) 27" 2560x1440 Dell U2711
Case NZXT Switch 810 White
Audio Device(s) Onboard sound & Z5500 Speakers
Power Supply Corsair 850W Gold
Mouse Asus ROG Sica
Keyboard Motospeed
Software Windows 10
#5
Depends on if you get the CO or EO revision!!
I'd be very lucky if I get an EO revision. You see this is just a case of us getting a new system for work, and we decided that I get an 8400 and 4GB RAM and Vista x64 but put it in my gaming system and in return I put my E4300, 2GB RAM and XP x86 in the work system.

Rampage
: The E8400 is 333x9 (not x10) basically exactly the same motherboard settings as I had to put my E4300 @ 3.0Ghz.
I also had been running my E4300 @ 3.0Ghz @ 333fsb x 9 multiplier at 1.35V in bios. Had I read more about the vanilla P5B's vdroop I would have attempted more voltage- but the most I ever risked was 1.375V in Bios which gave me 3.16Ghz for the processor which is 351 FSB.

I read that people got above 500fsb on the vanilla P5B though.... Now if I read that info here I'd come around to believe it.
Please also quote bios version.

As regards the E8400 though I see that its stock voltage is quite lower (1.2V?) compared with the stock voltage of my previous E4300 (1.34V).
Actually studying the cpu database now I'm amazed that I had been running my E4300 at 3.0Ghz stable on just 1.35V for more than a year and a half? :eek: Probably with the P5B's vdroop that voltage had been falling to less than 1.25 for sure!

(I got a habit of letting sleeping dogs lie, or as we more habitually say - if it ain't broke don't fix it...)
 
Joined
Sep 22, 2007
Messages
3,490 (0.93/day)
Likes
571
Location
UK
System Name Dream Weaver
Processor 3770K @ 4.3GHz
Motherboard Gigabyte Z77 UD5H
Cooling NH-D14
Memory 8GB DDR3 @ 2000MHz 10-10-10-28 1T
Video Card(s) MSI RX 480 8GB Gaming
Storage Crucial M4 128 Gb + 4TB
Display(s) ASUS 27" 1440p 144hz FreeSync
Case Fractal Design Define R3
Audio Device(s) Asus Xonar DS
Power Supply Corsair HX 620W
Software Windows 10 x64
#6
:eek:

My voltage is pretty high for a 45nm chip, but it requires that for stability.
 

Pum

New Member
Joined
Apr 5, 2007
Messages
34 (0.01/day)
Likes
2
Location
London, UK
Processor Intel E8400 E0 3GHz @ 4.0GHz (444x9) stable, 4.4GHz (489x9) max.
Motherboard Gigabyte P35-S3G F5b BIOS + 40mm fan on MCH
Cooling Zalman CNPS 9700 (Core temp 46c @ max load @ 4GHz)
Memory Geil Black Dragon DDR2-PC8500C5 (1GBx2) @ 1066MHz (444x2.4)
Video Card(s) Sapphire ATI HD 4850 Dual Slot Cooler (64c @ max load)
Storage Seagate SATA2 500GB 7200rpm 32MB cache
Display(s) Dell 3007WFP 30" (2560x1600)
Case Antec Three Hundred + 2 x 120mm front fans
Audio Device(s) 5.1 on mobo
Power Supply Corsair TX 650W
Software WinXP
Benchmark Scores SuperPi 1M 11.797s @ 4GHz (444x9). Max CPU 4.4GHz (489x9), Mem 978MHz (489x2).
#7
I have an E8400 E0, but haven't finished testing OC and stability or tuning vcore etc. So far I've got 4.34GHz (482x9) OCCT stable for at least 10 mins (no problems - didn't have time to test longer) of full load @ 1.412 vcore set in BIOS. In Windows, utils like CPU-Z and OCCT reported vcore at 1.39v @ idle, 1.36v @ full load.

At 4.4GHz (489x9) at the same voltages I could run Super PI 1M, but OCCT errored after a few minutes (system didn't crasdh though.) Might be possible to achieve stability at 4.4GHz, but I'm not interested for now - I was just doing a quick exploration of my hardware's limits.

At 4GHz (445x9) provisionally stable (not fully tested or tuned) @ 1.25 vcore, reporting 1.232v in Windows @ idle.

Last night I was testing how low I could set vcore at stock 3GHz (333x9). I tried something around 1.1 vcore in the BIOS (don't have exact figure with me) and was OCCT stable fro the full 1 hour test. May go lower, but haven't tried yet.

However, each chip can be a bit different. You can't always copy someone elses values and leave it at that. You'll probably need to do your own testing to establish minimum stable vcore for your settings and particular hardware.