Overclocking Escapades: Intel socket LGA775 Core 2 Duo E6300 B2 stepping

[Tech Tweaker]

I recently discovered that I'd never tried to overclock my E6300. After the rather disappointing overclock on my E6700 (3.5GHz, up from the stock 2.67GHz), nearly anything beyond a 1GHz overclock would have been preferable.

To my surprise, the E6700 I just got through testing and this E6300 seem to have very little in common when it comes to their overclocking potential (in terms of what they can achieve above stock, at a reasonable voltage). The E6300 I have seems to be miles ahead of the E6700 as far as the ease at which it can overclock.

This E6300's stock voltage is 1.325v, and I got to a 1GHz overclock (2.8GHz) with much less voltage than that. The other nice thing is that this CPU (so far) runs unbelievably cool, even under full load, I wish my E8400 or Q6600 chips ran this cool.

Intel Core 2 Duo E6300 overclock settings
VID: 1.325v
1.86GHz (266MHzx7) (stock): 1.104v (1.125v)-32°C
2GHz (286x7): 1.104v (1.125v)-36°C
2.1GHz (300x7): 1.104v (1.125v)-37°C
2.2GHz (315x7): 1.104v (1.125v)-37°C
2.3GHz (329x7): 1.104v (1.125v)-38°C
2.4GHz (343x7): 1.104v (1.125v)-37°C
2.5GHz (357x7): 1.104v (1.125v)-38°C
2.6GHz (372x7): 1.104v (1.125v)-38°C
2.7GHz (386x7): 1.104v (1.125v)-39°C
2.8GHz (400x7): 1.12v (1.15v)-40°C
2.9GHz (415x7): 1.168v (1.20v)-39°C
3GHz (429x7): 1.2v (1.225v)-41°C
3.1GHz (443x7): 1.216v (1.25v)-46°C (had a high ambient temp during this test)
3.2GHz (458x7): 1.248v (1.275v)-42°C
3.3GHz (472x7): 1.280v (1.3125v)-45°C
3.36GHz (480x7): 1.328v (1.35v)-51°C
3.4GHz (486x7): 1.328-1.344v (1.3625v)-49°C
3.5GHz (500x7): 1.376v (1.4v)-55°C

 

[Johan45]

Good stuff TT, bummer about the 6700, mine actually clocked pretty good.

 

[RJARRRPCGP]

Heads up, Real Temp and Core Temp likely calibrates the temp reading wrong on 65 nm Core 2s. It's likely off by roughly -10 C.

For me, on a 65 nm Core 2 Duo, they showed too low of core temps.

IIRC, they are always 90+ percent correct on 45 nm Core 2s.

I think the problem is because at least on some 65 nm Core 2s, the TJ Max is supposed to be 100 C or closer to that and gets set to 85 C or the like instead. I know that they got it wrong for M0s.

For L2s and B2s, 85 C should be right but not even 90 percent sure.

For 45 nm, there was never quite as much of a debate, so TJ Max is believed to be 100 C or closer to that.

 

[crazy_thiago]

HIII I've got an core 2(i dont remember very well). For 775 sockets
And i want to know what mobo you guys are using to OC or some cheap and good mobo for OC for my 775

 

[Tech Tweaker]

HIII I've got an core 2(i dont remember very well). For 775 sockets
And i want to know what mobo you guys are using to OC or some cheap and good mobo for OC for my 775

I'm using a Gigabyte GA-EP45-UD3P currently.