Sapphire HD 4890 1 GB GDDR5

, on Apr 2nd, 2009, in Graphics Cards. Manufacturer: Sapphire

Introduction

Today AMD announced their Radeon HD 4890 Series. It is based on the RV790 GPU which is an improved version of the RV770. The major cornerstone specifications have remained the same, only improvements related to clock frequencies have been made. While it was almost impossible to get an RV770 to run far beyond 800 MHz, the ATI HD 4890 reference runs at 850 MHz core by default. Many partners will be offering overclocked boards as well ranging up to 1000 MHz core speed.

We have three HD 4890 reviews for you today:
Sapphire HD 4890 (this review), PowerColor HD 4890 and AMD HD 4890 CrossFire. While AMD has been sending out overclocked cards running at 900 MHz, our cards are based on the reference design clocks of 850 MHz.

If you consider yourself a good artist, you may also want to check out our Create your own ATI high-end graphics card contest.

	GeForce 9800 GT	Radeon HD 4850	GeForce 9800 GTX	GeForce GTS 250 1 GB	GeForce GTX 260	Radeon HD 4870	Radeon HD 4890	GeForce GTX 275	GeForce GTX 280	Radeon HD 4870 X2	GeForce GTX 285
Shader units	112	800	128	128	192	800	800	240	240	2x 800	240
ROPs	16	16	16	16	28	16	16	32	32	2x 16	32
GPU	G92	RV770	G92	G92	GT200	RV770	RV790	GT200	GT200	2x RV770	GT200b
Transistors	754M	956M	754M	754M	1400M	956M	959M	1400M	1400M	2x 956M	1400M
Memory Size	512 MB	512 MB	512 MB	1024 MB	896 MB	512 MB	1024 MB	896 MB	1024 MB	2x 1024 MB	1024 MB
Memory Bus Width	256 bit	256 bit	256 bit	256 bit	448 bit	256 bit	256 bit	448 bit	512 bit	2x 256 bit	512 bit
Core Clock	600 MHz	625 MHz	675 MHz	738 MHz	576 MHz	750 MHz	850 MHz	633 MHz	602 MHz	750 MHz	648 MHz
Memory Clock	900 MHz	993 MHz	1100 MHz	1100 MHz	999 MHz	900 MHz	975 MHz	1134 MHz	1107 MHz	900 MHz	1242 MHz
Price	$110	$140	$160	$149	$240	$190	$249	$249	$315	$425	$350