E2180 overclock!

[Alaa]

I got an E2180 and overclocked it to 240Mhz FSB while keeping the RAM at 400Mhz with 3:5 mutli and left voltages on stock. Tested four hours with prime and stable, is that enough? Everest gives me ~90ns latency- normal? or high?

 

[brencat]

See my sig... I'd say you can certainly push that some more.

You'll probably make it to ~ 2.9ghz (290 x 10) on stock volts. After that it might require some more juice. The E2XXX's typically scale about 90 - 110 mhz per 0.04 vcore when additional vcore is first needed.

OC your CPU first and take your RAM out of the equation. Once your CPU OC is done then go back and OC your RAM with the dividers. So for now, until you get to ~ 3.2ghz which is close to the limit for these E2XXX chips, you should run your RAM 1:1 @ 5-5-5-15 timings and 1.9 - 2.0v.

 

[Alaa]

Thanks for your help! I don't want to push it to its limits as I plan to get an E7200 soon and sell this one and the fact that summer is coming!

 

[brencat]

Originally posted by: Alaa
I plan to get an E7200 soon and sell this one

Heh, that's my plan exactly...as soon as they drop to ~ $115 in July. But in the meantime, have a little fun with your E2180. Even if you decide not to push it, why not at least try for the stock volts max OC ? 2.9 - 3.0ghz is a breeze for this chip.

 

[Alaa]

Yeah, that's what I am going to try soon! Thanks for the advice!

 

[Alaa]

I overclocked the FSB to 266 but I had to increase voltage to 1.3375v -cpuz reports 1.296v- in order to have it prime95 stable for 15 mins (until now) - RAM 1:1. How long should I keep prime95 running?

EDIT:
prime failed at those settings so I pushed the voltage to 1.34xxV.

EDIT2:
Another fail on the same thread! Increased voltage to 1.35V.

 

[Alaa]

Stable for more than 2 hours now on 1.35V 266x10=2660 Mhz. How do you see this E2 owners?

 

[brencat]

Alaa, can you give us some more system specs -- what mobo? power supply? type and brand of RAM?

8 hrs Prime 95 or Orthos is considered stable IMO. You'll find others here like to go for 12+ hrs. Another good program is OCCT but personally I still prefer Orthos for dual cores.

 

[Alaa]

Mobo: Gigabyte P35 DS3L.
Power supply: donno! 550W. (Will upgrade it soon to Corsair 550W).
RAM: A-Data DDR2 800.

prime was stable for 5 hours. Got bored and closed it.

 

[nerp]

I'm thinking of getting an E7200 at some point too but the E2180 @ 3.2ghz is so speedy I really am having a hard time justifying it. I should probably just get a new videocard first.

 

[Alaa]

@nerp: Exactly! I have been thinking the same. I'll wait and see the next gen of video cards to decide. I have an EVGA 9600GT.

 

[Capt Caveman]

I run my E2180 stable at 1.375v 300x10 using the stock cooler. I know I could push more out of it but haven't been bothered too.

 

[RallyMaster]

Wow these chips clock really high. I was originally going to get a E2220 and just keep it stock...but with all you folks talking about how easy it is to OC on a stock cooler (and I'm going to be on a Scythe Ninja passive), I might just try OCing again.

 

[Alaa]

The voltage is set to 1.35v in the BIOS but it is 1.31v in medium load/idle and 1.296v under heavy load (prime95). Which one should I consider more important with respect to safety?

 

[MyLeftNut]

You're well within safe voltages. As long as the temps are decent, you can have it up to about 1.5V Max after vdroop and have that for 24/7 settings. I've been running my E6400 since it came out till now at those volts fine.

 

[brencat]

Originally posted by: Alaa
The voltage is set to 1.35v in the BIOS but it is 1.31v in medium load/idle and 1.296v under heavy load (prime95). Which one should I consider more important with respect to safety?

My view is that for 24/7 use, 10% over VID is the max bios vcore setting you should use. Others like to push it further but I don't like the idea of 1.5+ vcore.

My IP35-E droops about 0.04 under load but I don't go by that. My sig reflects the bios vcore I'm using of 1.465v (my CPU's VID is 1.325 x 1.1 = ~ 1.46v max)

 

[Alaa]

I think I will keep those settings for a while, please check this screen shot and give me your feedback:
http://img149.imageshack.us/im...03/overclocksetmq8.jpg

 

[brencat]

You never mentioned in your earlier post whether you were running 2gb RAM (2 x 1gb) or 4gb (2 x 2gb). If you're going to stop @ 2.7ghz, you've got 2 choices: use the 3:5 divider (1:1.66 ratio) and stay with those 5-5-5-18 timings, or stay with the current 2:3 divider and try 4-4-4-12 timings if your RAM can handle it. Don't use the tighter timings though if it requires you to raise vDIMM above A-Data's warranteed voltage for those sticks.

 

[Alaa]

I will try the 3:5 ratio.

Edit: Tried both, couldn't see a change in benches so I went back to normal 3:2 5-5-5-18.

 

[cpemma]

Originally posted by: brencat
See my sig... I'd say you can certainly push that some more.

You'll probably make it to ~ 2.9ghz (290 x 10) on stock volts...

I find I need 1.400V in BIOS for 2.9GHz, it's very much YMMV.

 

[Alaa]

Why do I have memory latency @ 72ns? I usually see it ~50 in anandtech benches!