PowerColor HD 4800 has adopted 55nm technology and is powered by ATI’s Radeon HD 4800 graphics processing units. For HD4870, its GPU and memory runs at 750MHz and 900MHz respectively with 512MB of GDDR5 on a 256-bit memory bus design, memory data transmission rates up to 3.6Gbps. As for HD 4850, it’s equipped with 512MB of GDDR3 on a 256bit memory bus design, while the GPU and memory run at 625MHz and 1986MHz respectively.
PowerColor HD 4800 series offer Microsoft® DirectX® 10.1, PCI Express® 2.0, on-chip HDCP, built-in HDMI with 7.1 surround audio, and also with the support for Shader Model 4.1, Universal Video Decode 2, and ATI CrossFireX™ technology.
|
HD
4870 |
HD
4850 |
Core
Speed |
750MHz |
625MHz |
Memory
Speed |
900MHz
(3.6Gbps) |
993MHz
(1986Mbps) |
Memory
Size |
512MB |
512MB |
Memory
Bandwidth |
256bit |
256bit |
Memory
Type |
GDDR5 |
GDDR3 |
DirectX® |
10.1 |
10.1 |
CrossFireXTM |
Yes |
Yes |
PCI-E |
2.0 |
2.0 |
HDMI
Support |
Yes |
Yes |