Overclocking 1:1 question.

[chavo]

Hi,

Right i will keep it simple, or try to.

• What is the benefit of overclocking at 1:1

how does it beat overclocking at say 4:5? is there a benefit at all? i have 1066 ram so my ram is not at a bottleneck. i have a Q6600 at 3148mhz @ 7 multi. see pics. would i be better running at multi 9 with an ofset of say 4:5.

As you can see a bit more tweaking and i could be getting in I7 zones.... well at least i5!

[Ulti]

As it's running 1:1, it means they would be both running in sync and theoretically means that it will run "better" and faster.

However, in the real world performance is probably neglible I'd say.

[chavo]

thanks very much, you try to do the best with the equipment you have, make the most out of what you have spent an all that! it just crapped out and froze at 480 so wound it to 470mhz and it seems stable, running prime95 now. it is water cooled which helps but still pushing 75 degrees.

1 last question if i may.

an E8400, best ram for it is? DDR800? for 1:1?

[Terbinator]

thanks very much, you try to do the best with the equipment you have, make the most out of what you have spent an all that! it just crapped out and froze at 480 so wound it to 470mhz and it seems stable, running prime95 now. it is water cooled which helps but still pushing 75 degrees.

1 last question if i may.

an E8400, best ram for it is? DDR800? for 1:1?

I was under the impression your should match RAM with your FSB so in theory it should be 1333MHz RAM, for 1:1.
Edit: And why are you running x7 multiplier ? Your best pumping it up to 9 and having a 400FSB (3.6GHz) then have your RAM multiplier set so you have 1200MHz RAM - 1066MHz should be capable of this.

[Ulti]

Q6600 at 75 degrees? That's way too hot, lower the FSB. You'd be better off with running a higher multiplier and lower FSB as it will allow you to reach a higher clock speed/overclock at a lower FSB which would mean lower temperature.

The performance gain from running RAM at 1:1 will come nowhere near to an increase in processor clock speed.

For an E8400 800Mhz RAM would do fine as it should still be able to hit 3.6Ghz, however having slightly faster RAM would be better as you wouldn't have to reduce the overclock on the RAM. From what I know intel socket 775 systems don't benefit that much from a memory overclock though.

[chavo]

75degree was at full load prime 95. i will keep tinkering. i dont think this chip will do 3.6, it isnt the G0 stepping. will give it a blast though

thanks

[Ulti]

My Phenom II X4 quad at 3.8ghz gets 55 degrees in Prime 95 small FTTs (=full load) with aircooling.

Perhaps your voltages are too high?

[chavo]

Dont know i have it on auto at the moment and on that readour it says 1.4, i believe this B1 goes to about 1.6 quite easily.

[Terbinator]

He's using a 130W Q6600 so the temps hes producing aren't that bad, more so when you see the voltage hes running - however if thats what you need to be stable at that speed id suggest some things a miss.

The chip should do 3.6Ghz, i personally think you would be unlucky for it not to. I'd suggest setting your Vcore to 1.35v and see how far you can get with it - dont forget to add some extra juice (voltage) to the NB as you overclock as the extra FSB speed will need it!

[rushholme]

On a P35 M/B, running my RAM at 4:5 produces ~10% worse memory latency than 1:1.

It is to do with the synchronisation between the FSB clock and memory bus.

If the clocks aren't synchronised, as in 4:5 ratio, using Memset to manually set the "performance level" will get you better results.

So running at 1:1 does help the average user get the best memory speeds (on Intel at least).