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GeForce 8600 GTS vs Radeon HD 3650 256MB

Intro

The GeForce 8600 GTS makes use of a 80 nm design. nVidia has set the core frequency at 675 MHz. The GDDR3 memory is set to run at a frequency of 1000 MHz on this specific model. It features 32 SPUs along with 16 TAUs and 8 Rasterization Operator Units.

Compare those specifications to the Radeon HD 3650 256MB, which makes use of a 55 nm design. AMD has set the core speed at 725 MHz. The DDR2 RAM runs at a frequency of 800 MHz on this card. It features 120(24x5) SPUs along with 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 256MB 78 Watts
Difference: 3 Watts (4%)

Memory Bandwidth

Performance-wise, the GeForce 8600 GTS should theoretically be a lot superior to the Radeon HD 3650 256MB in general. (explain)

GeForce 8600 GTS 32000 MB/sec
Radeon HD 3650 256MB 25600 MB/sec
Difference: 6400 (25%)

Texel Rate

The GeForce 8600 GTS will be much (approximately 86%) more effective at anisotropic filtering than the Radeon HD 3650 256MB. (explain)

GeForce 8600 GTS 10800 Mtexels/sec
Radeon HD 3650 256MB 5800 Mtexels/sec
Difference: 5000 (86%)

Pixel Rate

The GeForce 8600 GTS will be much (approximately 86%) faster with regards to anti-aliasing than the Radeon HD 3650 256MB, and will be able to handle higher resolutions better. (explain)

GeForce 8600 GTS 5400 Mpixels/sec
Radeon HD 3650 256MB 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 256MB

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 256MB
Manufacturer nVidia AMD
Year April 2007 2008
Code Name G84 RV635 PRO
Memory 512 MB 256 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 DDR2
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 largest amount of information (counted in MB per second) that can be moved across the external memory interface in a second. It's calculated by multiplying the interface width by its memory clock speed. If the card has DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the 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 can be applied per second. This is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, especially 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 GTS

Amazon.com

Check prices at:

Radeon HD 3650 256MB

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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