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GeForce GTX 650 vs Radeon HD 5550

Intro

The GeForce GTX 650 uses a 28 nm design. nVidia has clocked the core frequency at 1058 MHz. The GDDR5 memory runs at a frequency of 1250 MHz on this specific card. It features 384 SPUs along with 32 TAUs and 16 Rasterization Operator Units.

Compare that to the Radeon HD 5550, which features GPU clock speed of 550 MHz, and 512 MB of DDR2 RAM running at 400 MHz through a 128-bit bus. It also features 320(64x5) Stream Processors, 16 TAUs, and 8 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the GeForce GTX 650 will be 525% faster than the Radeon HD 5550 in general, due to its greater data rate. (explain)

GeForce GTX 650 80000 MB/sec
Radeon HD 5550 12800 MB/sec
Difference: 67200 (525%)

Texel Rate

The GeForce GTX 650 will be quite a bit (approximately 285%) more effective at texture filtering than the Radeon HD 5550. (explain)

GeForce GTX 650 33856 Mtexels/sec
Radeon HD 5550 8800 Mtexels/sec
Difference: 25056 (285%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 650 is the winner, by far. (explain)

GeForce GTX 650 16928 Mpixels/sec
Radeon HD 5550 4400 Mpixels/sec
Difference: 12528 (285%)

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 650

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 650 Radeon HD 5550
Manufacturer nVidia AMD
Year September 2012 February 9, 2010
Code Name GK107 Redwood LE
Memory 1024 MB 512 MB
Core Speed 1058 MHz 550 MHz
Memory Speed 5000 MHz 800 MHz
Power (Max TDP) 64 watts (Unknown) watts
Bandwidth 80000 MB/sec 12800 MB/sec
Texel Rate 33856 Mtexels/sec 8800 Mtexels/sec
Pixel Rate 16928 Mpixels/sec 4400 Mpixels/sec
Unified Shaders 384 320(64x5)
Texture Mapping Units 32 16
Render Output Units 16 8
Bus Type GDDR5 DDR2
Bus Width 128-bit 128-bit
Fab Process 28 nm 40 nm
Transistors 1300 million 627 million
Bus PCIe 3.0 x16 PCIe 2.1 x16
DirectX Version DirectX 11.0 DirectX 11
OpenGL Version OpenGL 4.3 OpenGL 3.2

Memory Bandwidth: Memory bandwidth is the largest amount of data (measured in megabytes per second) that can be transported over the external memory interface in one second. The number is worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the clock 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 rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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GeForce GTX 650

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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