4770k first time

teppic · 17 Aug 2013 at 16:30

If you get sick of waiting just grab 2x7950s. That'll outperform the 9970.

uksoldierboy · 17 Aug 2013 at 16:43

Trust me I've been real tempted to do just that with the deals on at the moment, but I think I'm going to wait until we have a better understanding on how the 9950-9970 will perform.

Shiari · 17 Aug 2013 at 20:50

teppic said:
It's the CPU - some 4770Ks will only manage 4.3GHz no matter what you throw at them, others can get to 5GHz fairly easily. You've definitely got one of the best though.

Very few would actually be able to hit 5.0 I think ... mine could perhaps get there delidded and under water (had 4.7 almost stable, just didn't trust the high load temperatures and went back to 4.6), but I've not heard of many reaching even 4.8.

VincentHanna · 19 Aug 2013 at 09:57

I got my i7 4770k up and running last night, using a Cooler Master Seidon 240m.

I used the advice here and went straight to 4.5Ghz on a 1.25 voltage. Worked like a charm. I ran Prime95 for about 90 minutes, and my CPU got up to 71C.

Unfortunately Windows 8 went in to sleep mode and obviously stopped everything in it's tracks.

Weird thing was, that when the PC resumed from sleep, the turbo and cache ratios had reset to 39x, but the CPU voltage had remained at 1.25?!

I'm hugely GPU bottlenecked at the moment anyway, so it's not really worth overclocking yet, but is it worth seeing if I can go to 4.5Ghz on a lower voltage and still be stable?

Idle is 33C which seems good for Haswell?

8 Pack · 19 Aug 2013 at 11:46

If your stable just leave it man. Dont over do prime it kills CPU and shows nothing about everyday stability.

VincentHanna · 19 Aug 2013 at 12:05

I doubt i'll overclock it anyway, as I say i'm GPU bound and only play at 1080p anyway.

I just wanted to see what it could do.

Thanks for the advice.

8 Pack · 19 Aug 2013 at 17:46

4.5 is enough to power any single gpu setup.

ViRuS2k · 19 Aug 2013 at 23:39

On Cache Volts set 1.25v ?????? is that Vrin or Ring voltage ? is 1.25v way high ? i read on a oc forum from a master clocker that 1.1 - 1.2v is the max on air ? or am i reading this wrong lol sin0822 is the guy that recommended this or i could be wrong im new to haswell z87 ocing lol

that voltage on cache could be the reason why i can not get uncore 43-44 stable ....

uksoldierboy · 1 Sep 2013 at 16:28

Just a quick update,
After fitting my H100 and my temps getting much better, i've dabbled a little more on the overclocking front.
Tried both 4.6 and 4.7, managed to get both stable pretty quickly in all my games, here's my results:

4.5
45x multi
45x Unicore
vcore @1.232
Cache @1,240

4.6
46x multi
44x Unicore
vcore @1.250
Cache @1,240

4.7
47x multi
45x Unicore
vcore @1.300
Cache @1,250

For now i've got it at 4.6 as tbh, i've not noticed any real increase in performance other than benchmarking, probably down to being GPU Limited.

8 Pack · 2 Sep 2013 at 10:29

4.7 at 1.3v is a good chip yeah especially given that Cache Ratio. About 4.4 is the sweet spot for perf on ambient with 4.2 Uncore, unless you bench. Then its 6.5.

uksoldierboy · 3 Sep 2013 at 12:54

8 Pack said:
4.7 at 1.3v is a good chip yeah especially given that Cache Ratio. About 4.4 is the sweet spot for perf on ambient with 4.2 Uncore, unless you bench. Then its 6.5.

Cheers 8Pack,
Think i'll settle for 4.6 and be happy

teppic · 3 Sep 2013 at 22:24

My first 4770K could only get to 3.9GHz on 1.3v

My 4670K is better - it's stable on 4.4GHz at 1.21v, but I can't go any higher because I'm on a low profile cooler on a mini-itx board and it reaches 90C in stress tests.

uksoldierboy · 4 Sep 2013 at 10:42

teppic said:
My first 4770K could only get to 3.9GHz on 1.3v

My 4670K is better - it's stable on 4.4GHz at 1.21v, but I can't go any higher because I'm on a low profile cooler on a mini-itx board and it reaches 90C in stress tests.

I did get lucky!
Like i've mentioned, tbh, it's doesn't even need to be overclocked, the performance @ turbo speed is brilliant.
Glad you've had more luck with the 4670K teppic