Introduction

Not long ago AMD announced their new HD 3400 and HD 3600 Series which are the follow up to the HD 2400 and HD 2600 cards. The HD 3650 from PowerColor we have on our testbench today is based on the RV635 GPU which is just an optical shrink of the RV630. An optical shrink is like you would put the chip's blueprint on a photocopier, set it to 85%, make the copy and then build the chip using the new plans. Ok, there are some bugfixes too, but nothing that will change performance of the architecture. What changed is the process size. By going from 65 nm to 55 nm, AMD can save some money on the manufacturing cost of each GPU.

	Radeon HD 2600 XT	Radeon HD 3650	PowerColor HD 3650	GeForce 8600 GTS	Radeon HD 3850	Radeon HD 3870	GeForce 9600 GT	GeForce 8800 GTS	GeForce 8800 GT
Shader units	120	120	120	32	320	320	64	96	112
ROPs	4 x2	4 x2	4 x2	8	16	16	16	20	16
GPU	RV630	RV635	RV635	G84	RV670	RV670	G94	G80	G92
Transistors	390M	378M	378M	289M	666M	666M	505M	681M	754M
Memory Size	256 MB	256 MB	256 MB	256 MB	256 MB	512 MB	512 MB	320 MB 640 MB	512 MB
Memory Bus Width	128 bit	128 bit	128 bit	128 bit	256 bit	256 bit	256 bit	320 bit	256 bit
Core Clock	800 MHz	725 MHz	800 MHz	675 MHz	670 MHz	777 MHz	650 MHz	500 MHz	600 MHz
Memory Clock	1100 MHz	800 MHz	900 MHz	1000 MHz	828 MHz	1126 MHz	900 MHz	800 MHz	900 MHz
Price	$90	$85	$95	$110	$170	$210	$200	$260 $350	$215