Newer E8400 draws less power?

Tzupy · Post by **Tzupy** » Wed Jan 07, 2009 6:28 am

I'd like to know if the newest revision E8400 (Wolfdale E0 IIRC) is using less power than previous revisions.
The reason is that I plan to cool it passively with a Ninja2, and if it's still around 45W, then I'd rather settle for a 32W E7300.
It would be nice if I were told how to distinguish between revisions BEFORE buying it. Thank you.

tehcrazybob · Post by **tehcrazybob** » Wed Jan 07, 2009 6:48 am

I don't believe that different versions of E8400 use substantially different amounts of power, but there's not much difference between E8400 and E7300. After all, they run the same voltage and very similar clock speeds. The benchmarks I've seen suggest the E8400 uses approximately 33 watts; I don't have any numbers for an E7300, but a 7200 is 28 watts. Ultimately, you're looking at very small differences.

croddie · Post by **croddie** » Wed Jan 07, 2009 7:10 am

tehcrazybob wrote:Ultimately, you're looking at very small differences.

I think a 7200 is closer to 20W

croddie · Post by **croddie** » Wed Jan 07, 2009 7:13 am

Tzupy wrote:I'd like to know if the newest revision E8400 (Wolfdale E0 IIRC) is using less power than previous revisions.

Yes from what I read at the time the E0 E8500 took about the same power as an older E8200, so the E8400 probably a little less.
I wouldn't get an E7300 but an E7200 instead (although out of production) since I gather the E7300 is an overclocked version of the E7200.
[QUTOE]It would be nice if I were told how to distinguish between revisions BEFORE buying it. Thank you.[/quote]
http://www.cluboc.net/reviews/cpu/intel ... /index.asp

burebista · Post by **burebista** » Wed Jan 07, 2009 10:15 am

You can cool fanless a E8400 C0 without problems.
I do this since July with a Ninja rev.B and TR Bolt-Thru kit. Even at 3.6 GHz and full-load with Linpack I'm at a comfortable 30 distance to TJMax.

mackworth · Post by **mackworth** » Thu Jan 08, 2009 5:22 am

I have an e8400 with a mini ninja with the supplied fan running very very low. I converted a dvd to h.264 and was hitting about 34C by the end according to gigabyte easy tune application.

I am contemplating taking the fan off.

Tzupy · Post by **Tzupy** » Thu Jan 08, 2009 9:09 am

Thank you for the answers. I think I'll go for it instead of the E7300. The E0 should be use about 5% less power than the C0.
And I'll try to sweet-talk the vendor into showing me the box before buying, so I can check the S-spec: SLB9J, thanks croddie!

batka · Post by **batka** » Sun Feb 15, 2009 5:18 pm

Hi folks,

What is cooler, the E8200 or the E8400 CPU? Which draws less power?

Post by **CA_Steve** » Sun Feb 15, 2009 7:49 pm

given the same step code, slower = less power.

http://www.nordichardware.com/Articles/?skrivelse=547&page=3Here's a C0 and E0 review at Nornic Hardware. 2.5W idle delta, 6.8W load.

line · Post by **line** » Mon Feb 16, 2009 3:36 pm

It is worth noting that the readings were taken at the same core voltage of 1.25v, but in reality C0 parts often have a lower stock voltage than E0 parts (I've only looked at E8400), so the difference would be even smaller.

@batka how about the new E5300 and E5400 models?

Post by **CA_Steve** » Mon Feb 16, 2009 4:00 pm

CA_Steve wrote:given the same step code, slower = less power.

Here'sa C0 and E0 review at Nornic Hardware. 2.5W idle delta, 6.8W load.

batka · Post by **batka** » Sat Feb 28, 2009 4:23 pm

line wrote:@batka how about the new E5300 and E5400 models?

Yeah they looks good for HTPC usage!
E5300/5400 are half of the price of E8200/8400.

E5300/5400 have even smaller Die size, and newer stepping, so they must draw very little power.
Only thing that they have 2 MB L2 cache, and 800 MHz FSB, and they don't have Intel-VT virtualization support.
I'll think about them.
Thanks for my head-up!

Newer E8400 draws less power?

Newer E8400 draws less power?

Re: Newer E8400 draws less power?