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GeForce 8600 GTS vs Radeon HD 3650 512MB

Intro

The GeForce 8600 GTS features core clock speeds of 675 MHz on the GPU, and 1000 MHz on the 512 MB of GDDR3 memory. It features 32 SPUs along with 16 TAUs and 8 Rasterization Operator Units.

Compare all that to the Radeon HD 3650 512MB, which uses a 55 nm design. AMD has set the core frequency at 725 MHz. The GDDR3 RAM works at a frequency of 800 MHz on this particular card. It features 120(24x5) SPUs as well as 8 TAUs and 4 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8600 GTS 75 Watts
Radeon HD 3650 512MB 78 Watts
Difference: 3 Watts (4%)

Memory Bandwidth

In theory, the GeForce 8600 GTS should be much faster than the Radeon HD 3650 512MB in general. (explain)

GeForce 8600 GTS 32000 MB/sec
Radeon HD 3650 512MB 25600 MB/sec
Difference: 6400 (25%)

Texel Rate

The GeForce 8600 GTS should be a lot (approximately 86%) better at texture filtering than the Radeon HD 3650 512MB. (explain)

GeForce 8600 GTS 10800 Mtexels/sec
Radeon HD 3650 512MB 5800 Mtexels/sec
Difference: 5000 (86%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce 8600 GTS is a better choice, and very much so. (explain)

GeForce 8600 GTS 5400 Mpixels/sec
Radeon HD 3650 512MB 2900 Mpixels/sec
Difference: 2500 (86%)

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 GTS

Amazon.com

Check prices at:

Radeon HD 3650 512MB

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 GTS Radeon HD 3650 512MB
Manufacturer nVidia AMD
Year April 2007 2008
Code Name G84 RV635 PRO
Memory 512 MB 512 MB
Core Speed 675 MHz 725 MHz
Memory Speed 2000 MHz 1600 MHz
Power (Max TDP) 75 watts 78 watts
Bandwidth 32000 MB/sec 25600 MB/sec
Texel Rate 10800 Mtexels/sec 5800 Mtexels/sec
Pixel Rate 5400 Mpixels/sec 2900 Mpixels/sec
Unified Shaders 32 120(24x5)
Texture Mapping Units 16 8
Render Output Units 8 4
Bus Type GDDR3 GDDR3
Bus Width 128-bit 128-bit
Fab Process 80 nm 55 nm
Transistors 289 million (Unknown) million
Bus PCIe x16 PCIe 2.0 x16/AGP 8x
DirectX Version DirectX 10 DirectX 10.1
OpenGL Version OpenGL 3.0 OpenGL 3.0

Memory Bandwidth: Bandwidth is the maximum amount of information (counted in megabytes per second) that can be transported over the external memory interface in a second. The number is calculated by multiplying the bus width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

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

Display Prices

Hide Prices

GeForce 8600 GTS

Amazon.com

Check prices at:

Radeon HD 3650 512MB

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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