PowerColor HD 4890 1 GB GDDR5

PowerColor HD 4890 1 GB GDDR5

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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:
Powercolor HD 4890 (this review), Sapphire 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.

Please note that the PowerColor HD 4890 we are testing today has been pulled out of the stock of a german distributor which means it is guaranteed to not be a golden sample.

9800 GT
HD 4850
9800 GTX
GeForce GTS
250 1 GB
GTX 260
HD 4870
HD 4890
GTX 275
GTX 280
HD 4870 X2
GTX 285
Shader units 1128001281281928008002402402x 800240
ROPs1616161628161632322x 1632
GPUG92RV770G92G92GT200RV770RV790GT200GT2002x RV770GT200b
Transistors754M 956M754M 754M 1400M 956M959M1400M 1400M 2x 956M1400M
Memory Size512 MB 512 MB 512 MB1024 MB896 MB512 MB 1024 MB 896 MB1024 MB2x 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 Clock600 MHz 625 MHz 675 MHz 738 MHz 576 MHz 750 MHz 850 MHz 633 MHz 602 MHz 750 MHz 648 MHz
Memory Clock900 MHz 993 MHz 1100 MHz 1100 MHz 999 MHz 900 MHz 975 MHz 1134 MHz 1107 MHz 900 MHz 1242 MHz
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