CPU design/ Heat / Overclocking potential

Cuzzin Chizzy

Distinguished
Apr 7, 2012
214
0
18,680
Been reading a liitle more about Haswell and came across a site that said it was using TIM instead of a solder for heat dispersion.

I guess Sandy uses solder and Ivy TIM?...

I've heard people complaining about IVY and Haswell for being hot.

What are the temp/wattage differences ?
Can Ivy and Haswell overclock as well as Sandy or do they get too hot?
 

yyk71200

Distinguished
Mar 10, 2010
877
0
19,160
Ivy runs hotter that Sandy. However, with really good cooling can pretty much match Sandy in overclockability.

Haswell, on the other hand so far shows to be the least overclockable. You can consider yourself pretty lucky if you can take it past 4.5GHz.
 
This matter about Ivy being hot is out of the roof. As Ivy only got a TDP of 77w and 95w for Sandy, then it really doesn't make sense in my head how the temperatures can be much worse on Ivy - Maybe the size of the chip is the sinner, as Ivy is a much smaller chip than sandy. But if a low-end stock cooler easily can take care of it, then I wouldn't consider it being hot.

It is true, that the TIM on the Ivy has proved being worse than Sandy, but it doesn't make sense for a manufacturer like Intel to use such good TIM/solder, as what is used on Ivy is more than enough and probably will do a bit for the selling price.

Haswell is getting hotter, yes. It has a higher TDP of 84w, I suspect the Integrated GPU, which really has been improved upon is also contributing to the heat a lot. Again, I wouldn't consider it hot.
But overclocking Haswell has proven to require a high voltage for great overclocks, which will increase the TDP, which will make the CPU run even hotter.



 

Cuzzin Chizzy

Distinguished
Apr 7, 2012
214
0
18,680


So for overclockability, as far as being able to push the chip without more heat and voltage, would you say this order is fair?

Sandy Bridge
Ivy Bridge
Haswell
1st gen

And where would Sandy Bridge E fit on the list?
 


Yes, still mind that Haswell does have more performance and it is not hard to get great overclocks thus far you have the right motherboard and the right cooling solution. Many reviews claim that they have reached about 5 GHz overclock on the i7-4770k stable.

Sandy Bridge E is almost completely based upon the same architecture and built quality as Sandy Bridge therefore you will see similar overclockability. Mind that Sandy Bridge E gets a litte hotter due to more cores and high frequencies. :)
 

Cuzzin Chizzy

Distinguished
Apr 7, 2012
214
0
18,680



yeah, I have an x58 setup with a i7 960 that I got about two years ago, didn't realize at the time that Sandy was out and that it was better:( I tried overclocking and it just wasnt clicking for me. I tried 200 BCLK x 21 multi and it seemed stable but waaaay too hot.

Do you think I would notice an improvement with a 168 BCLK x 25multi OC? Would I have to mess around with voltages and stuff a lot?

My problem is that I want to have the benefits of a good overclock, but I'm not that interested in the complexities that go along with it.

It's to the point to where I've been thinking about getting a new MB/CPU/RAM ever since I got the one I have. On one hand I feel it's not necessary, but on the other I hate thinking that I'm missing out on the silky smooth performance of a nice Sandy system with a good OC and lower heat. I heard they are incredibly easy to OC too cuz you can leave BCLK alone and mess with the unlcocked multi, and you have more headroom because of the lower temps.

So that's my OC-OCD dilemma. Keep what I got and overclock it and deal with the heat issues. Leave it at stock and wonder what I'm missing performance wise. Or spend some dough for a new setup and either notice a nice improvement or be dissapointed that it's not what I thought it would be.

It can be a little frustrating. Not sure who to believe, some people say the performance boosts are awesome, and others, that companies are merely rolling out newer hardware every year, with minor improvements, to bank off the people who have to have the newest thing.
 

8350rocks

Distinguished


Please point me to the reviewers quoting 5 GHz on a 4770k. Tom's couldn't get their sample stable past 4.6 GHz, and that was with extreme effort. Everything else I read said dramatically less than that even...most places are quoting around 4.3-4.4 GHz on the 4670k and 4770k. Tom's review discusses all of that.