Retail HSF

How good is the retail HSF that comes with the Barton 2500+. Good enough for 11x200?

not sure. the stock heatsink on my 2400+ was pretty decent performance/noise wise.

try increasing your speed bit by bit, and watch your temperatures. if your temperatures start getting out of hand, then you know you need a better heatsink.

if you are feeling brave you could just jump straight to 11x200.

I don't have one yet. Just getting ready to place my order for a major upgrade. Thinking along the lines of 2500+ Barton with a Gigabyte Ga-7N400PRO2. Figured I'd get the retail CPU and see what it'll do before I dish out extra cash for a monster HSF.

from what i've seen the retail heatsinks for the bartons are getting better and better.. they acutally have a copper bottom.. i've seen the latest ones and they dont seem all that shabby.. but still no where near a slk =p

i can go to 2.15ghz on stock cooling with my barty, i used to be able to go higher but the thermal paste is drying up and i havent bought another tube yet

It should be good for 2200 as long as your voltage isn't anything crazy. It's the same heatsink that they package with 3200+ chips, so it's capable of cooling that at least decently.

The thermal resistance of the stock HSF is about 0.36 C/W. That is for each watt of power the CPU dissipated as heat, the CPU temperature would rise by 0.36 C above ambient system temperature, since not all the heat can be removed by the heat sink, as we all know about.

The top end copper heat sink w/ high rpm Tornado fan has a thermal resistance of about 0.22-0.23 C/W, i.e. less temperature rise per watt.

This link shows that a HSF of 0.36 C/W loses about 347-433 MHz to a HSF with 0.23 C/W such as SLK-800U.

Comparing some HSF's on CPU overclock frequency on air (page 6)

I did some test on a Tbred B 1700+ DLT3C which can run 2.5+ GHz at 1.9 V using a SLK-800U w/ a high rpm fan. With the stock HSF, I was able to get 2.15 GHz at 1.6 V, confirming the above analysis.

The reason is that for the stock HSF w/ higher thermal resistance, the higher temperature limits higher CPU overclocking frequency above certain break-even point (of frequency and temperature), regardless of voltage applied. Higher temperature slows transistors down.

I had Ajigo HSF (small, thin fins, nickle plated copper base) that came w/ my retail 2500+ which I OCed to 2.33 GHz @ 1.8V. But the load temp was 53°C...

For 2.2 GHz, I didn't need to raise the Vcore and was running around 40°C load (I think...). All this was after lapping, AS3 and CPU duct.

Thanks for the replies. Maybee I won't be such a cheap SOB and just buy a decent Thermalright cooler to start with. I got a 40% OC with this old intel chip and retail sink, but I suppose the newer chips use alot more power than the old.
I know this is the CPU forum but what do you guys think of the Gigabyte boards?

Thanks

really would depend on which one. but in generall they seem pretty feature rich.

which exact board are you thinking of though?

ive only had one gigabyte board and that was a KT133A chipset board i loved it but what gigabyte boardu thinking in getting if u havent got one

for amd chips go with the Abit NF7-S if looking for a new motherboard

I was looking at the GA-7N400PRO2

Well, I have a Gigabyte board...not the one you mentioned. Pretty happy with it overall. Except I have a restart problem when my Vcore is maxed out. And a regret for not getting a Nforce-2 board...

yes all things said.. if the system is AMD then you should def look into a NF2 board

I've been running the Retail HSF with my 2500+ (AQXEA 0330WPMW) at 11x200 for the past 10 days without any problems. Prime95 is stable for 24+ hours @1.60V at that speed on my new NF7-S. I have an SK-7 coming in a few days, so I'll wait to push it any higher.