ram sinks or not?

[doran1801]

hi i have just installed a water colling system in my pc. The question i have is now that i using water in the gpu, how important is the need for ram sinks? do i have to get them or will it make no difference?

 

[Darkwave]

The memory on my X1900XT is naked, with an overclock. I wouldn't worry, but just keep an eye on it.

 

[doran1801]

thanks, i ran the automated clock config in ccc and my pc crashed, it used to work on air, the temps are ok 24oc idle so i am not sure what is going on

 

[Cyber-Mav]

i ran my ram bare with no heatsinks and it was clocked to 828mhz and had no problems. i slapped on some thermaltake copper ramsinks just cuz i got them cheapo for 4 quid. they made no difference to overclocking.

 

[doran1801]

i have just tried to run 3dmark o3 and got the same crash, the screen goes into standby and the only way to sort it is to reset the pc the temp in ccc are only 29c idle, it seems to be heat related unless i have knacked the cars fitting the cooler

 

[Cyber-Mav]

i have just tried to run 3dmark o3 and got the same crash, the screen goes into standby and the only way to sort it is to reset the pc the temp in ccc are only 29c idle, it seems to be heat related unless i have knacked the cars fitting the cooler

that happened to me when i was first testing the overclocking on my card. turned out that there was not enough voltage so i had to increase it to get stability.

if i run 688mhz core but use 1.2 then the screen freezes up for like 10 seconds then the monitor powers down but the pc is still running since i can keep pressing ALT+F4 and enter to restart the pc.
slowly i cranked up the voltage then eventually it would not cut the gfx off when i used 688mhz gpu clock HOWEVER if i ran the spinning ship in the tray tools artifact tester ONLY then would the monitor power down. that was at around 1.350v. at 1.375v i never got monitor power down but i got artifacts in the scanner, and at 1.400v iv got full stability

mind you my max load temps are 55c

 

[GFresh]

A good way to gauge it is, if the stock cooler cooled them then its a good idea to put ramsinks on them.

 

[Cyber-Mav]

thing is the stock cooler actually dumps the gpu heat into the ram hence why the ram runs better with no cooling on it compared to the stock cooler.
ram sinks is just icing on the cake.

 

[Jokester]

I found GDDR4 runs a fair bit hotter than GDDR3 so if it's a card with the former it might benefit with sinks.

Jokester

 

[Cyber-Mav]

doesn;t gddr4 have a lot less power consumption than gddr3? find it odd that it generates more heat

 

[Jokester]

Not sure to be honest, their noticeably warm even with decent air flow over the sinks at idle, previous types would be cool to the touch.

Jokester

 

[jaykay]

yer ddr4 does use less power but its the same as ddr and ddr2 ddr2 modules have to have air cooling all the time and some have water cooling now
i thinks its due to the amps or something like that

 

[Gashman]

i ran my ram bare with no heatsinks and it was clocked to 828mhz and had no problems. i slapped on some thermaltake copper ramsinks just cuz i got them cheapo for 4 quid. they made no difference to overclocking.

will watercooling + ram voltmod = higher overclock?