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GeForce GTX 465 vs Radeon HD 5550

Intro

The GeForce GTX 465 has a core clock speed of 607 MHz and a GDDR5 memory speed of 802 MHz. It also makes use of a 256-bit bus, and makes use of a 40 nm design. It features 352 SPUs, 44 Texture Address Units, and 32 ROPs.

Compare those specifications to the Radeon HD 5550, which features core speeds of 550 MHz on the GPU, and 400 MHz on the 512 MB of DDR2 memory. It features 320(64x5) SPUs as well as 16 TAUs and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the GeForce GTX 465 should in theory be much superior to the Radeon HD 5550 overall. (explain)

GeForce GTX 465 102592 MB/sec
Radeon HD 5550 12800 MB/sec
Difference: 89792 (702%)

Texel Rate

The GeForce GTX 465 is much (approximately 204%) faster with regards to AF than the Radeon HD 5550. (explain)

GeForce GTX 465 26708 Mtexels/sec
Radeon HD 5550 8800 Mtexels/sec
Difference: 17908 (204%)

Pixel Rate

The GeForce GTX 465 should be much (about 341%) faster with regards to FSAA than the Radeon HD 5550, and also should be able to handle higher screen resolutions without losing too much performance. (explain)

GeForce GTX 465 19424 Mpixels/sec
Radeon HD 5550 4400 Mpixels/sec
Difference: 15024 (341%)

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 465

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 465 Radeon HD 5550
Manufacturer nVidia AMD
Year May 2010 February 9, 2010
Code Name GF100 Redwood LE
Memory 1024 MB 512 MB
Core Speed 607 MHz 550 MHz
Memory Speed 3208 MHz 800 MHz
Power (Max TDP) 200 watts (Unknown) watts
Bandwidth 102592 MB/sec 12800 MB/sec
Texel Rate 26708 Mtexels/sec 8800 Mtexels/sec
Pixel Rate 19424 Mpixels/sec 4400 Mpixels/sec
Unified Shaders 352 320(64x5)
Texture Mapping Units 44 16
Render Output Units 32 8
Bus Type GDDR5 DDR2
Bus Width 256-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 max amount of information (in units of megabytes per second) that can be transferred over the external memory interface in one second. It's worked out by multiplying the bus width by its memory speed. If the card has DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, 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 can be applied per second. This number is calculated by multiplying the total number of texture units of the card 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 applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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GeForce GTX 465

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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