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GeForce 8600 GT 512MB DDR2 vs Radeon HD 4830 1GB

Intro

The GeForce 8600 GT 512MB DDR2 has clock speeds of 540 MHz on the GPU, and 400 MHz on the 512 MB of DDR2 memory. It features 32 SPUs along with 16 Texture Address Units and 8 ROPs.

Compare those specs to the Radeon HD 4830 1GB, which makes use of a 55 nm design. AMD has set the core frequency at 575 MHz. The GDDR4 RAM works at a speed of 900 MHz on this specific card. It features 640(128x5) SPUs as well as 32 Texture Address Units and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8600 GT 512MB DDR2 47 Watts
Radeon HD 4830 1GB 95 Watts
Difference: 48 Watts (102%)

Memory Bandwidth

The Radeon HD 4830 1GB should in theory be much faster than the GeForce 8600 GT 512MB DDR2 in general. (explain)

Radeon HD 4830 1GB 57600 MB/sec
GeForce 8600 GT 512MB DDR2 12800 MB/sec
Difference: 44800 (350%)

Texel Rate

The Radeon HD 4830 1GB is quite a bit (about 113%) faster with regards to anisotropic filtering than the GeForce 8600 GT 512MB DDR2. (explain)

Radeon HD 4830 1GB 18400 Mtexels/sec
GeForce 8600 GT 512MB DDR2 8640 Mtexels/sec
Difference: 9760 (113%)

Pixel Rate

The Radeon HD 4830 1GB will be a lot (more or less 113%) more effective at anti-aliasing than the GeForce 8600 GT 512MB DDR2, and also will be able to handle higher resolutions without losing too much performance. (explain)

Radeon HD 4830 1GB 9200 Mpixels/sec
GeForce 8600 GT 512MB DDR2 4320 Mpixels/sec
Difference: 4880 (113%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

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GeForce 8600 GT 512MB DDR2

Amazon.com

Check prices at:

Radeon HD 4830 1GB

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model GeForce 8600 GT 512MB DDR2 Radeon HD 4830 1GB
Manufacturer nVidia AMD
Year April 2007 Oct 21, 2008
Code Name G84 RV770 LE
Memory 512 MB 1024 MB
Core Speed 540 MHz 575 MHz
Memory Speed 800 MHz 1800 MHz
Power (Max TDP) 47 watts 95 watts
Bandwidth 12800 MB/sec 57600 MB/sec
Texel Rate 8640 Mtexels/sec 18400 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 9200 Mpixels/sec
Unified Shaders 32 640(128x5)
Texture Mapping Units 16 32
Render Output Units 8 16
Bus Type DDR2 GDDR4
Bus Width 128-bit 256-bit
Fab Process 80 nm 55 nm
Transistors 289 million 956 million
Bus PCIe x16 PCIe 2.0 x16
DirectX Version DirectX 10 DirectX 10.1
OpenGL Version OpenGL 3.0 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the largest amount of information (in units of MB per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the interface width by its memory speed. If the card has DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce 8600 GT 512MB DDR2

Amazon.com

Check prices at:

Radeon HD 4830 1GB

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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