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GeForce 8600 GT 1GB GDDR3 vs Radeon HD 6450 (OEM)

Intro

The GeForce 8600 GT 1GB GDDR3 features a clock speed of 540 MHz and a GDDR3 memory speed of 700 MHz. It also uses a 128-bit bus, and makes use of a 80 nm design. It is made up of 32 SPUs, 16 Texture Address Units, and 8 Raster Operation Units.

Compare that to the Radeon HD 6450 (OEM), which comes with a GPU core clock speed of 625 MHz, and 512 MB of GDDR3 memory running at 800 MHz through a 64-bit bus. It also features 160 Stream Processors, 8 Texture Address Units, and 4 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM) 31 Watts
GeForce 8600 GT 1GB GDDR3 47 Watts
Difference: 16 Watts (52%)

Memory Bandwidth

In theory, the GeForce 8600 GT 1GB GDDR3 will be 75% quicker than the Radeon HD 6450 (OEM) in general, because of its higher data rate. (explain)

GeForce 8600 GT 1GB GDDR3 22400 MB/sec
Radeon HD 6450 (OEM) 12800 MB/sec
Difference: 9600 (75%)

Texel Rate

The GeForce 8600 GT 1GB GDDR3 will be a lot (more or less 73%) more effective at AF than the Radeon HD 6450 (OEM). (explain)

GeForce 8600 GT 1GB GDDR3 8640 Mtexels/sec
Radeon HD 6450 (OEM) 5000 Mtexels/sec
Difference: 3640 (73%)

Pixel Rate

The GeForce 8600 GT 1GB GDDR3 should be much (about 73%) more effective at anti-aliasing than the Radeon HD 6450 (OEM), and also able to handle higher resolutions without losing too much performance. (explain)

GeForce 8600 GT 1GB GDDR3 4320 Mpixels/sec
Radeon HD 6450 (OEM) 2500 Mpixels/sec
Difference: 1820 (73%)

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 1GB GDDR3

Amazon.com

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Radeon HD 6450 (OEM)

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 1GB GDDR3 Radeon HD 6450 (OEM)
Manufacturer nVidia AMD
Year April 2007 February 2011
Code Name G84 Caicos
Memory 1024 MB 512 MB
Core Speed 540 MHz 625 MHz
Memory Speed 1400 MHz 1600 MHz
Power (Max TDP) 47 watts 31 watts
Bandwidth 22400 MB/sec 12800 MB/sec
Texel Rate 8640 Mtexels/sec 5000 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 2500 Mpixels/sec
Unified Shaders 32 160
Texture Mapping Units 16 8
Render Output Units 8 4
Bus Type GDDR3 GDDR3
Bus Width 128-bit 64-bit
Fab Process 80 nm 40 nm
Transistors 289 million 370 million
Bus PCIe x16 PCIe 2.1 x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 4.1

Memory Bandwidth: Bandwidth is the maximum amount of information (counted in MB per second) that can be transported past the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce 8600 GT 1GB GDDR3

Amazon.com

Check prices at:

Radeon HD 6450 (OEM)

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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