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GeForce 9500 GT 512MB GDDR3 vs Radeon HD 3650 512MB

Intro

The GeForce 9500 GT 512MB GDDR3 comes with a clock speed of 550 MHz and a GDDR3 memory speed of 800 MHz. It also makes use of a 128-bit bus, and makes use of a 55 nm design. It features 32 SPUs, 16 Texture Address Units, and 8 ROPs.

Compare those specs to the Radeon HD 3650 512MB, which features clock speeds of 725 MHz on the GPU, and 800 MHz on the 512 MB of GDDR3 memory. It features 120(24x5) SPUs along with 8 Texture Address Units and 4 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9500 GT 512MB GDDR3 50 Watts
Radeon HD 3650 512MB 78 Watts
Difference: 28 Watts (56%)

Memory Bandwidth

Both cards have exactly the same bandwidth, so in theory they should perform the same. (explain)

Texel Rate

The GeForce 9500 GT 512MB GDDR3 will be much (about 52%) better at anisotropic filtering than the Radeon HD 3650 512MB. (explain)

GeForce 9500 GT 512MB GDDR3 8800 Mtexels/sec
Radeon HD 3650 512MB 5800 Mtexels/sec
Difference: 3000 (52%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce 9500 GT 512MB GDDR3 is superior to the Radeon HD 3650 512MB, by a large margin. (explain)

GeForce 9500 GT 512MB GDDR3 4400 Mpixels/sec
Radeon HD 3650 512MB 2900 Mpixels/sec
Difference: 1500 (52%)

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 9500 GT 512MB GDDR3

Amazon.com

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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 9500 GT 512MB GDDR3 Radeon HD 3650 512MB
Manufacturer nVidia AMD
Year July 2008 2008
Code Name G96b RV635 PRO
Memory 512 MB 512 MB
Core Speed 550 MHz 725 MHz
Memory Speed 1600 MHz 1600 MHz
Power (Max TDP) 50 watts 78 watts
Bandwidth 25600 MB/sec 25600 MB/sec
Texel Rate 8800 Mtexels/sec 5800 Mtexels/sec
Pixel Rate 4400 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 55 nm 55 nm
Transistors 314 million (Unknown) million
Bus PCIe x16 2.0, PCI 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 data (measured in MB per second) that can be transported past the external memory interface within a second. The number is worked out by multiplying the interface width by its memory speed. If it uses DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This figure 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 card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant 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

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GeForce 9500 GT 512MB GDDR3

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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