i just OCed my 2600pro Turbo, Factory OCed, 256mb.  because i had to format the pc.
so i OCed from (650/525) to (783/567) safely. and normal 2600pros are at (600/500).  
overall, it has been Oced (+183/+67)  
when i play games., the memory gets too hot (i think) i touched it for 5 seconds and it slightly burned my finger.  that being said, im estimating it is about 50-60C
is it hot?
should i lower the memory clock?

What cooler do you have on there? If your cooler does not cover the ram or blow enough air over it you could be overheating the memory. If the cooler does not cover the memory you could buy some memory heatsinks for about $10, which should bring the temperatures down a bit.

it doesnt cover memories, but it takes up 2 pci slots, for core, right when i turn the pc on, the temp is 38C(in the desktop) and later goes up to 46C  
when gaming, about 58C never reaches 60C

The core temps are fine, graphics cards can handle very high temperatures. You could buy something like these: http://www.newegg.com/Product/Prod [...] 6835119061 which should fit underneath the cooler on the front and fit fine on the back memory chips as well, those should decrease memory temps a bit, assuming there is decent airflow in your case and some air passes over them.

yes i got some fans in my case. inside of the case temp is usually at 32C
 
and i dont want to buy stuff anymore, i just know what you think of my memory temp, if it is high, i will lower the clock, instead of buying coolers
 
can you guys touch your graphics memory, after running game for 10 minutes?

I personally can touch it, but it does feel hot to the touch, but not burning. My memory has been overclocked from 690 to 900MHz, but has a lot of airflow going over it. If you set your memory back to stock is the temperature the same or is it noticeably cooler? If it is about the same temperature I would say you are fine, but if it gets noticeably cooler at stock then I would set it back to stock.

im stupid, i shouldve done that.. ill try

Ha, when you mentioned your burnt your finer I had a quick flashback when I was overclocking a Radeon 9000. I had it at 340/300 I believe and ran artifact scan in ATItool. The screen went blank so I started to check out the video card. I just installed a chipset heatsink, some blue zalmen aluminum one and it was pretty hot. I then touched the memory and just about burned my finger. At any rate I busted out an old 80mm fan plugged it in and let it cool the memory chips on the opposite side of the gpu. After a few seconds the video came back and ati tool was still running Basicly as long as you don't get artifacts/ or your screen randomly goes blank you should be alright. But it never hurts to add some sinks.

wow..  
it is little cooler at stock. but OC increase performance, alot. i play company of heros, in 1680/1050 all high setting, no AA at stock, i got 24FPS, after Oc i got 32FPS

Yeah, if it is only a little cooler I wouldn't worry about it unless you start getting artifacting, in which case take it back down to stock. Have you checked stability with ATI Tool to make sure it is stable? ATI Tool stresses things greatly and will scan for artifacts that you would never notice in an actual game, so if you get a couple artifacts in ATI Tool occasionally you should be fine still.

 
This is true about ATITool stressing a card more than in a real game. From the above overclock where I got the 9000 to 340/300 the game is 100% stable fine even after about 20 minutes of full load in WoW(It was hurting bad since it was only pushing out 20~30FPS outside) But ATITool brings it to that next level and the 9000 doesn't fare well.

Yep, same with my 7900GS, I get an occasional artifact in ATI Tool at higher frequencies, even with my volt-mod on it. In games at those same speeds though I get nothing. Haven't had anything as bad as what happened to your 9000 happen though, probably because my VF-900 blows air lots of air over the memory even though the memory has no heatsinks.