Zalman 9900 or H50 for 1090t?

[tehdrizzle]

I’ve currently got the AMD 955 C2 running at 3.41Ghz and 1.250v and stock bus and HT speeds with a Zalman CNPS9900 copper heatsink. Idle sits right in the area of 27-31 degrees celcius at idle and under load in Prime95 it will max out around 40-42 degrees celcius. I’ve had it up to 3.8Ghz at 1.4v stable with both the HT and bus at stock frequency and voltage. If I tried to increase the HT link at all past the 2000Mhz speed the PC would not boot and I would get just a black screen. With the 3.8Ghz settings it would idle around 38 degrees celcius and max out around 55 degrees celcius. I’m considering upgrading to the 1090t and am curious as to what you all would recommend for a heatsink for that CPU. I would be going for an OC of around 4Ghz and am not sure if the Zalman 9900 would hold up to that kind of an OC.

Thanks for the help!
-Paul

 

[saint19]

Hi.

What's your budget?

Here are some very good.

1- Coolermaster Hyper 212+
2- Xigmatek Gaia
3- Titan Fenrir
4- Tuniq Tower 120 Extreme
5- Prolimatechs megahalems
6- Coolermaster V6GT
7- Thermalright Venomous X
8- Noctua NH-D14
9- Thermalright Silver Arrow

 

[rubix_1011]

Are you sure its heat that is limiting your OC and not your chip, motherboard, PSU or RAM?

 

[saint19]

^It's the CPU.

 

[rubix_1011]

Exactly my point...everyone assumes that OC limitations are heat related and assume slapping on a new cooler will do the trick.

In some cases...perhaps, but almost all are hardware limitations or user error.

 

[saint19]

I recommend the cooler because he is thinking upgrade to a 1090T.

 

[tehdrizzle]

I'll have to look into those coolers since they seem to rate higher than the Zalman that I currently have. Thanks for the help!

 

[ortoklaz]

@ OP your current chip- 955 should hit 4GHZ with no problem so obviously you not doing it the right way,would suggest using AMD overdrive as for the cooler..you mention H50 which it will give you as much performance as top rated air heat sink and if you willing to spend few extra $ you may want to look in to RASA;
http://www.frozencpu.com/products/11743/ex-wat-159/XSPC_Rasa_750_RS240_Universal_CPU_Water_Cooling_Kit_Hot_Item.html?id=dV7g5t9m
I don't think there is anything that even comes close to right now (price/performance)
we don't usually recommend LC kits but this one is worth mentioning

 

[saint19]

The C2 revision isn't very good for overclock above 3.8GHz, and needs a lot of work and risk.

And you DON'T NEED lcs for 4GHz, is enough with a air cooler.

 

[rubix_1011]

^+10 to ortoklaz and the Rasa recommendation to go the route of entry watercooling.

 

[ortoklaz]

http://www.scythe-usa.com/product/cpu_top.html

dude..this is like 3~4 thread that you posting same link..it's way past 4:20.. :lol: