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GeForce GTX 480 vs Radeon HD 5550

Intro

The GeForce GTX 480 features clock speeds of 700 MHz on the GPU, and 924 MHz on the 1536 MB of GDDR5 RAM. It features 480 SPUs along with 60 Texture Address Units and 48 ROPs.

Compare all of that to the Radeon HD 5550, which uses a 40 nm design. AMD has set the core speed at 550 MHz. The DDR2 RAM runs at a speed of 400 MHz on this card. It features 320(64x5) SPUs as well as 16 TAUs and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the GeForce GTX 480 will be 1286% faster than the Radeon HD 5550 in general, due to its greater data rate. (explain)

GeForce GTX 480 177408 MB/sec
Radeon HD 5550 12800 MB/sec
Difference: 164608 (1286%)

Texel Rate

The GeForce GTX 480 should be much (about 377%) more effective at texture filtering than the Radeon HD 5550. (explain)

GeForce GTX 480 42000 Mtexels/sec
Radeon HD 5550 8800 Mtexels/sec
Difference: 33200 (377%)

Pixel Rate

The GeForce GTX 480 is much (approximately 664%) better at anti-aliasing than the Radeon HD 5550, and able to handle higher screen resolutions better. (explain)

GeForce GTX 480 33600 Mpixels/sec
Radeon HD 5550 4400 Mpixels/sec
Difference: 29200 (664%)

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 5550

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 5550
Manufacturer nVidia AMD
Year March 2010 February 9, 2010
Code Name GF100 Redwood LE
Memory 1536 MB 512 MB
Core Speed 700 MHz 550 MHz
Memory Speed 3696 MHz 800 MHz
Power (Max TDP) 250 watts (Unknown) watts
Bandwidth 177408 MB/sec 12800 MB/sec
Texel Rate 42000 Mtexels/sec 8800 Mtexels/sec
Pixel Rate 33600 Mpixels/sec 4400 Mpixels/sec
Unified Shaders 480 320(64x5)
Texture Mapping Units 60 16
Render Output Units 48 8
Bus Type GDDR5 DDR2
Bus Width 384-bit 128-bit
Fab Process 40 nm 40 nm
Transistors 3000 million 627 million
Bus PCIe x16 PCIe 2.1 x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 3.2

Memory Bandwidth: Bandwidth is the largest amount of information (measured in MB per second) that can be transferred past the external memory interface in a second. The number is worked out by multiplying the interface width by the speed of its memory. In the case of DDR RAM, it must 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 high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total amount of texture units of the card by the core clock 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 per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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GeForce GTX 480

Amazon.com

Check prices at:

Radeon HD 5550

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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