Diamond HD 4870 512 MB GDDR5

Diamond HD 4870 512 MB GDDR5

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Introduction



Recently AMD introduced their latest graphics card, the Radeon HD 4870. It is based on the same RV770 GPU that is present on the HD 4850, too. The major difference is that the HD 4870 uses GDDR5 while the HD 4850 uses GDDR3. Certainly the biggest benefit of GDDR5 is that is offers twice the memory bandwidth than GDDR3 at the same clock. As a result the HD 4870 has almost double the memory bandwidth available, even though its memory clock is slightly lower than the HD 4850. Another difference to the HD 4850 is that the HD 4870 uses a dual-slot cooling solution allowing AMD to increase the core clock by 125 MHz to 750 MHz.
Diamond's HD 4870 is fully based on the AMD reference design, but Diamond has already announced a special Black Edition card that allows much higher clock speeds.

Radeon
HD 3850
Radeon
HD 3870
GeForce
9600 GT
GeForce
8800 GT
Radeon
HD 4850
GeForce
8800 GTS
Radeon
HD 4870
GeForce
8800 GTX
GeForce
8800 Ultra
GeForce
GTX 260
GeForce
GTX 280
Shader units 32032064112800128800128128192240
ROPs1616161616161624242832
GPURV670RV670G94G92RV770G92RV770G80G80GT200GT200
Transistors666M 666M505M 754M956M754M956M681M 681M 1400M 1400M
Memory Size256 MB 512 MB 512 MB 512 MB 512 MB 512 MB 512 MB 768 MB768 MB896 MB1024 MB
Memory Bus Width 256 bit 256 bit 256 bit 256 bit 256 bit 256 bit 256 bit 384 bit 384 bit 448 bit 512 bit
Core Clock670 MHz 777 MHz 650 MHz 600 MHz 625 MHz 650 MHz 750 MHz 575 MHz 612 MHz 576 MHz 602 MHz
Memory Clock828 MHz 1126 MHz 900 MHz 900 MHz 993 MHz 970 MHz 900 MHz 900 MHz 1080 MHz 999 MHz 1107 MHz
Price$120$150$140$160$199$210$299$390$520$449$649
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