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GeForce GT 320 vs Radeon HD 5550

Intro

The GeForce GT 320 has a core clock frequency of 540 MHz and a GDDR3 memory frequency of 790 MHz. It also makes use of a 128-bit memory bus, and makes use of a 40 nm design. It is comprised of 72 SPUs, 24 Texture Address Units, and 8 Raster Operation Units.

Compare all that to the Radeon HD 5550, which uses a 40 nm design. AMD has clocked the core speed 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 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the GeForce GT 320 should theoretically be quite a bit superior to the Radeon HD 5550 overall. (explain)

GeForce GT 320 25280 MB/sec
Radeon HD 5550 12800 MB/sec
Difference: 12480 (98%)

Texel Rate

The GeForce GT 320 will be a lot (approximately 47%) more effective at texture filtering than the Radeon HD 5550. (explain)

GeForce GT 320 12960 Mtexels/sec
Radeon HD 5550 8800 Mtexels/sec
Difference: 4160 (47%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon HD 5550 is superior to the GeForce GT 320, but not by far. (explain)

Radeon HD 5550 4400 Mpixels/sec
GeForce GT 320 4320 Mpixels/sec
Difference: 80 (2%)

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 GT 320

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 GT 320 Radeon HD 5550
Manufacturer nVidia AMD
Year February 2010 February 9, 2010
Code Name GT215 Redwood LE
Memory 1024 MB 512 MB
Core Speed 540 MHz 550 MHz
Memory Speed 1580 MHz 800 MHz
Power (Max TDP) 43 watts (Unknown) watts
Bandwidth 25280 MB/sec 12800 MB/sec
Texel Rate 12960 Mtexels/sec 8800 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 4400 Mpixels/sec
Unified Shaders 72 320(64x5)
Texture Mapping Units 24 16
Render Output Units 8 8
Bus Type GDDR3 DDR2
Bus Width 128-bit 128-bit
Fab Process 40 nm 40 nm
Transistors 727 million 627 million
Bus PCIe x16 PCIe 2.1 x16
DirectX Version DirectX 10.1 DirectX 11
OpenGL Version OpenGL 3.3 OpenGL 3.2

Memory Bandwidth: Memory bandwidth is the max amount of information (measured in MB per second) that can be moved across the external memory interface within a second. It's calculated by multiplying the card's bus 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 higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, the better the video 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 can possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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GeForce GT 320

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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