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GeForce GTX 480 vs Radeon HD 3650 256MB

Intro

The GeForce GTX 480 features core speeds of 700 MHz on the GPU, and 924 MHz on the 1536 MB of GDDR5 memory. It features 480 SPUs along with 60 TAUs and 48 Rasterization Operator Units.

Compare all of that to the Radeon HD 3650 256MB, which features a clock frequency of 725 MHz and a DDR2 memory frequency of 800 MHz. It also features a 128-bit memory bus, and uses a 55 nm design. It is made up of 120(24x5) SPUs, 8 Texture Address Units, and 4 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3650 256MB 78 Watts
GeForce GTX 480 250 Watts
Difference: 172 Watts (221%)

Memory Bandwidth

Theoretically, the GeForce GTX 480 should be quite a bit faster than the Radeon HD 3650 256MB in general. (explain)

GeForce GTX 480 177408 MB/sec
Radeon HD 3650 256MB 25600 MB/sec
Difference: 151808 (593%)

Texel Rate

The GeForce GTX 480 is a lot (approximately 624%) more effective at AF than the Radeon HD 3650 256MB. (explain)

GeForce GTX 480 42000 Mtexels/sec
Radeon HD 3650 256MB 5800 Mtexels/sec
Difference: 36200 (624%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 480 is superior to the Radeon HD 3650 256MB, by a large margin. (explain)

GeForce GTX 480 33600 Mpixels/sec
Radeon HD 3650 256MB 2900 Mpixels/sec
Difference: 30700 (1059%)

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 GTX 480

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 GTX 480 Radeon HD 3650 256MB
Manufacturer nVidia AMD
Year March 2010 2008
Code Name GF100 RV635 PRO
Memory 1536 MB 256 MB
Core Speed 700 MHz 725 MHz
Memory Speed 3696 MHz 1600 MHz
Power (Max TDP) 250 watts 78 watts
Bandwidth 177408 MB/sec 25600 MB/sec
Texel Rate 42000 Mtexels/sec 5800 Mtexels/sec
Pixel Rate 33600 Mpixels/sec 2900 Mpixels/sec
Unified Shaders 480 120(24x5)
Texture Mapping Units 60 8
Render Output Units 48 4
Bus Type GDDR5 DDR2
Bus Width 384-bit 128-bit
Fab Process 40 nm 55 nm
Transistors 3000 million (Unknown) million
Bus PCIe x16 PCIe 2.0 x16/AGP 8x
DirectX Version DirectX 11 DirectX 10.1
OpenGL Version OpenGL 4.1 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the largest amount of data (counted in megabytes per second) that can be transferred over the external memory interface within a second. It's calculated by multiplying the interface width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR 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 clock speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

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

Display Prices

Hide Prices

GeForce GTX 480

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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