PowerColor HD4830 Reviewajmatson -
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The HD 4830 uses the same RV770 core that is used in the HD 4850 and HD 4870 cards however it is clocked at a lower speed of 575MHz and only has 640 shader units and 32 texture units unlike the PowerColor HD 4850 which has 800 shaders and 40 texture units. The memory also runs at a slower 900MHz (1800MHz effective). Just like the other HD 4800 series cards this card is PCI Express 2.0 and runs on a 256-bit memory bus. PowerColor has decided to use the reference color PC Board but chose to go with a larger dual slot aftermarket cooler for reduced temperatures which is nice since most 4800 series cards run warm.
PowerColor has made the I/O panel a little more interesting by offering three of the main video connectors directly on the card without the need for dongles or adapters. Available is one DVI port, one VGA port, and one HDMI port. To power the HD 4830 there is a 6-pin power port on the rear of the card. This provides the card with enough juice to push your games to the max. There are two tabs on the top spine of the card that are used to connect multiple cards in a CrossFire combination. You can string up to four cards for a QuadFire system with a supported motherboard.
Once the heatsink is removed you get a better look at the GPU. Like I mentioned earlier this is the same RV770 core that the HD 4850 and HD 4870 cards use with a mechanism used to lock out some of the shader and texture units. This core is also clocked lower than the two which also helps keep the card cooler. There is 512MB of DDR3 memory available and the card uses a 256-bit memory bus. The GPU still has 956M transistors and 16 ROPs as the other 4800 series cards.
To cool the HD 4830 PowerColor has chosen to use a dual slot aftermarket cooler which is made of a black colored aluminum and designed with fins to dissipate heat quickly. There is a small fan that is used to push cooler air through the fins and keep the air circulating.
Now that we have seen the card it is time to install the drivers and get going.