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Lucky 3770k?

O

Owls

Senior member
After putting together the 3770k and getting the noctua dh14 I decided to check out how fast this thing would go. I set the multi to 45 and the offset to .0020 lo and behold it booted up fine and ran bf3 for 3 hours in multiplayer then two hours of prime95 on all cores. The temps hit a max of 61c in prime and 55c in bf3.

I think I could go further but with two 680s running at 2560x1600 my gpus will probably end up being the bottleneck. Is this typical? My stepping is E1
 
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Wow. Impressive. What are you measuring temps with? Have you tried prime95? My temps in prime95 at 4.6ghz @ 1.255V go up to 77-83C per core. Using an H100.
 
my apologies it is indeed at a .020+ offset. I'm using hwinfo64 to measure temps. the highest vcore ive seen was at 1.211
 
Owls said:
my apologies it is indeed at a .020+ offset. I'm using hwinfo64 to measure temps. the highest vcore ive seen was at 1.211
Click to expand...

Try prime 95 at the highest setting or intel burn test. Curious to see what your numbers are - your temps should be quite a bit higher in those compared to bf3.
 
So I followed your instructions to run prime95. I upped the offset to 0.025 just to be safe and this time my case (cooler master HAF) had the side closed, I think it was open before which attributed to the lower reading.

from core 0 to 3 the max temps were 66c, 69c, 67c, 65c. It seems to fluctuate between 60-65c on all the cores. I never did see it climb back up to 69c on any of the cores though.

http://imgur.com/V65f9
 
Wow... I'll trade you. Impressive temps and vcore. 4.5ghz gives me 90c+ temps at 1.28v.
 
that's what I'm seeing from others and don't understand how could the temp spread be so out of whack at nearly the same settings?
 
I know I'm only running at a 42 multiplyer right now, but I'm stable at 1.07 vcore with max temps at 64c. I wonder how little vcore I can go with at 45.
 
So last night I ran prime95 @ 4.5ghz and it was running until I stopped it at 8am this morning. I decided to try 4.7ghz and it took a whopping .13+ offset to get it prime stable. The temps soared to 80-82c and as a result I'm not sure it is worth running the chip that hot but it was prime stable for the last 2 hours.

I clocked it down to 4.6 with an offset of .055 and the temps are a much more comfortable 74-76c running prime95. Based off anand's recent closed loop watercooling reviews I would only feel comfortable running at 4.7 with the kraken 60 model. The noctua can't keep up past 4.6ghz
 
Owls said:
So last night I ran prime95 @ 4.5ghz and it was running until I stopped it at 8am this morning. I decided to try 4.7ghz and it took a whopping .13+ offset to get it prime stable. The temps soared to 80-82c and as a result I'm not sure it is worth running the chip that hot but it was prime stable for the last 2 hours.

I clocked it down to 4.6 with an offset of .055 and the temps are a much more comfortable 74-76c running prime95. Based off anand's recent closed loop watercooling reviews I would only feel comfortable running at 4.7 with the kraken 60 model. The noctua can't keep up past 4.6ghz
Click to expand...

What are you checking temps with? Try downloading the app "real temp". If you have an asus motherboard, the included temp checker is not accurate. With the asus probe II utility it reports my CPU temps around 54C while real temp (which goes by the internal sensors on the CPU) reports around 75C at a maximum overclock.

Anyway, sounds like you bought a pretty good chip 🙂 4.7 @ 76c is nothing to sneeze at. I have to use around 1.3V for stability at 4.7.= which is higher than what I would like.
 
He says his stepping is "E1." I haven't kept track of Ivy Bridge on this angle, but many months ago I suggested a possibility that Intel might improve the IB in later production runs. Such a possibility was discounted by others as extremely unlikely.
 
BonzaiDuck said:
He says his stepping is "E1." I haven't kept track of Ivy Bridge on this angle, but many months ago I suggested a possibility that Intel might improve the IB in later production runs. Such a possibility was discounted by others as extremely unlikely.
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I think e1 is new stepping? Saw posting saying hoping e0 would fix issue when googled.
 
according to the intel site the only stepping right now is E1. I thought there was an E0? Perhaps newer batches are better?
 
Owls said:
according to the intel site the only stepping right now is E1. I thought there was an E0? Perhaps newer batches are better?
Click to expand...

I was just looking at cpu-z screenshots of 3770k's on google. There are some that are E0 and some are E1.

o08k6w.jpg


Looks like E1 is the norm and E0 is engineering sample? (ES)

CPU-Z-Intel-Ivy-Bridge-Core-i7-3770K-E0-stepping.png


Luck of the draw on OP's results most likely.
 
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E0 is definitely an engineering sample. I guess that if there any improvements it could be with newer batches. I remember this being the case with some intel cpus several years ago where people would look at the boxes for specific batch numbers to find out when they were manufactured, I want to say Q6600s were an example.
 
Owls said:
After putting together the 3770k and getting the noctua dh14 I decided to check out how fast this thing would go. I set the multi to 45 and the offset to .0020 lo and behold it booted up fine and ran bf3 for 3 hours in multiplayer then two hours of prime95 on all cores. The temps hit a max of 61c in prime and 55c in bf3.

I think I could go further but with two 680s running at 2560x1600 my gpus will probably end up being the bottleneck. Is this typical? My stepping is E1
Click to expand...

I wouldn't exactly call 4.5 wtih any kind of vcore bump lucky. I didn't have to touch my vcore until I tried for 4.6. I run 4.8Ghz stable at 1.25vcore. Granted I am indeed one of the luckier ones but I've seen a lot of people run 4.5-4.6Ghz without much of a vcore bump at all.
 
Mine does 4.4 at about 1.14 vcore, so I may have a pretty good chip. Havent tried going higher.
 
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