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GeForce GTX 470 vs Radeon HD 5550

Intro

The GeForce GTX 470 features core clock speeds of 607 MHz on the GPU, and 837 MHz on the 1280 MB of GDDR5 memory. It features 448 SPUs along with 56 Texture Address Units and 40 Rasterization Operator Units.

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

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the GeForce GTX 470 should theoretically be a lot superior to the Radeon HD 5550 in general. (explain)

GeForce GTX 470 133920 MB/sec
Radeon HD 5550 12800 MB/sec
Difference: 121120 (946%)

Texel Rate

The GeForce GTX 470 will be quite a bit (approximately 286%) faster with regards to anisotropic filtering than the Radeon HD 5550. (explain)

GeForce GTX 470 33992 Mtexels/sec
Radeon HD 5550 8800 Mtexels/sec
Difference: 25192 (286%)

Pixel Rate

The GeForce GTX 470 will be a lot (about 452%) faster with regards to FSAA than the Radeon HD 5550, and will be able to handle higher screen resolutions without losing too much performance. (explain)

GeForce GTX 470 24280 Mpixels/sec
Radeon HD 5550 4400 Mpixels/sec
Difference: 19880 (452%)

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 470

Amazon.com

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Radeon HD 5550

Amazon.com

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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 470 Radeon HD 5550
Manufacturer nVidia AMD
Year March 2010 February 9, 2010
Code Name GF100 Redwood LE
Memory 1280 MB 512 MB
Core Speed 607 MHz 550 MHz
Memory Speed 3348 MHz 800 MHz
Power (Max TDP) 215 watts (Unknown) watts
Bandwidth 133920 MB/sec 12800 MB/sec
Texel Rate 33992 Mtexels/sec 8800 Mtexels/sec
Pixel Rate 24280 Mpixels/sec 4400 Mpixels/sec
Unified Shaders 448 320(64x5)
Texture Mapping Units 56 16
Render Output Units 40 8
Bus Type GDDR5 DDR2
Bus Width 320-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 data (counted in megabytes per second) that can be transferred over the external memory interface in a second. It is calculated by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better 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 texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the video 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 the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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GeForce GTX 470

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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