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The HD 4850 was a joy to review as it blasted through the benchmarks and completely owned the gaming tests that we threw at it. No amount of resolution or eye candy seemed to slow it down. This coming from a budget performance card, we couldn't wait to get our hands on the HD 4870, which has the same brilliant features except for higher clocks and GDDR5 memory.
After a wait that seemed like forever, we finally have the card with us. The reason for the excitement is the GDDR5 memory onboard that is capable of speeds of upto 5Gbps. That is some serious bandwidth right there that should satisfy all your HD gamming needs. It's the same RV770 core that powers the HD 4850 except for the higher clock speeds and top of the line memory technology.
The card we will be reviewing is not from any of ATI's AIB partners, but from an evaluation board of ATI themselves.
Specifications


The HD 4870 bears the same 965 million-transistor count using the 55nm fabrication process. Of course the highlight of the HD 4870 has to be the GDDR5 memory running at a speed of 3.6Gbps. This is the scaled down version since the GDDR5 memory architecture can operate at 5.2Gbps. I guess ATI is leaving some headroom for some future 'Black Edition' variants of the HD 4870. The features are as follows:
PCI Express 2.0 x16 bus interface
256-bit GDDR5 memory interface
Microsoft DirectX 10.1 support
Unified Superscalar Shader Architecture
Dynamic Geometry Acceleration
OpenGL 2.0 support
ATI Avivo HD Video and Display Platform
ATI PowerPlay
ATI CrossFireX Multi-GPU Technology
Unified Video Decoder 2
On-chip HDCP
All these features assure you that you'll be ready for the upcoming games. ATI has always been on the forefront when it comes to implementing new technologies in their products. This definitely adds a lot more value to your purchase and ensures future compatibility with games.
The card came in just a brown box so there wasn't really any Driver CD's or manuals with it. But just like the HD 4850, you can expect a similar bundle for the HD 4870 as well.
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