HIS ATI Radeon HD 4650 Heatpipe Silent

silentscot · Post by **silentscot** » Sun Sep 28, 2008 5:11 am

I've done a search through the forums and can't see any mention of this card:

https://www.overclockers.co.uk/showprod ... =GX-105-HT

Does anyone have any experience of this product. Primarily to be used in a near silent gaming rig that currently has a XFX passive 7950GT installed.

Your thoughts are appreciated especially if you have bought one.

FartingBob · Post by **FartingBob** » Sun Sep 28, 2008 6:07 am

Havent used it myself, but they've really crippled it in order to make it cheap while still passive. 600mhz core (compared to 750 stock) and 1000Mhz DDR2 instead of 2000Mhz GDDR3.
i fear this wont be immensely faster than the card its replacing. Yes it will be a boost, but IMO not worth Â£60.

Vicotnik · Post by **Vicotnik** » Sun Sep 28, 2008 9:30 am

Take a look at the 4670 instead. It's a little more expensive, but will outperform your 7950GT by quite a bit and draw less power. No cards with stock passive cooling is available yet, but there are a few aftermarket coolers that will do the trick.

The 4670 is crippled by the 128bit memory bus and suffers for it. The 4650 has half the memory bandwidth of the 4670.. Needless to say it will perform pretty bad in most modern games.

inti · Post by **inti** » Tue Sep 30, 2008 2:29 am

FartingBob wrote:they've really crippled it in order to make it cheap while still passive. 600mhz core (compared to 750 stock) and 1000Mhz DDR2 instead of 2000Mhz GDDR3.

That is indeed the difference between 4650 and 4670. 4650 is like a factory-underclock of the 4670. Supposed to achieve 48W peak instead of 59W.

I believe the core chip, features and memory bandwidth (128-bit) are the same between 4650 and 4670.

Vicotnik · Post by **Vicotnik** » Tue Sep 30, 2008 6:40 am

inti wrote:I believe the core chip, features and memory bandwidth (128-bit) are the same between 4650 and 4670.

The memory bus is the same, but the memory bandwidth of the 4650 is cut in half since the frequency is half that of the 4670. That will have a much larger impact on performance than the lower clockspeed of the GPU.