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GeForce GTX 460 1GB vs Radeon HD 4550 256MB

Intro

The GeForce GTX 460 1GB uses a 40 nm design. nVidia has clocked the core frequency at 675 MHz. The GDDR5 RAM works at a speed of 900 MHz on this particular card. It features 336 SPUs along with 56 TAUs and 32 Rasterization Operator Units.

Compare all that to the Radeon HD 4550 256MB, which makes use of a 55 nm design. AMD has set the core speed at 600 MHz. The DDR3 memory is set to run at a speed of 800 MHz on this model. It features 80(16x5) SPUs along with 8 TAUs and 4 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4550 256MB 25 Watts
GeForce GTX 460 1GB 160 Watts
Difference: 135 Watts (540%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 460 1GB should perform quite a bit faster than the Radeon HD 4550 256MB in general. (explain)

GeForce GTX 460 1GB 115200 MB/sec
Radeon HD 4550 256MB 12800 MB/sec
Difference: 102400 (800%)

Texel Rate

The GeForce GTX 460 1GB should be a lot (more or less 688%) better at texture filtering than the Radeon HD 4550 256MB. (explain)

GeForce GTX 460 1GB 37800 Mtexels/sec
Radeon HD 4550 256MB 4800 Mtexels/sec
Difference: 33000 (688%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 460 1GB is the winner, and very much so. (explain)

GeForce GTX 460 1GB 21600 Mpixels/sec
Radeon HD 4550 256MB 2400 Mpixels/sec
Difference: 19200 (800%)

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 460 1GB

Amazon.com

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Radeon HD 4550 256MB

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 460 1GB Radeon HD 4550 256MB
Manufacturer nVidia AMD
Year July 2010 Sep 30, 2008
Code Name GF104 RV710
Memory 1024 MB 256 MB
Core Speed 675 MHz 600 MHz
Memory Speed 3600 MHz 1600 MHz
Power (Max TDP) 160 watts 25 watts
Bandwidth 115200 MB/sec 12800 MB/sec
Texel Rate 37800 Mtexels/sec 4800 Mtexels/sec
Pixel Rate 21600 Mpixels/sec 2400 Mpixels/sec
Unified Shaders 336 80(16x5)
Texture Mapping Units 56 8
Render Output Units 32 4
Bus Type GDDR5 DDR3
Bus Width 256-bit 64-bit
Fab Process 40 nm 55 nm
Transistors 1950 million 242 million
Bus PCIe x16 PCIe 2.0 x16
DirectX Version DirectX 11 DirectX 10.1
OpenGL Version OpenGL 4.1 OpenGL 3.0

Memory Bandwidth: Bandwidth is the largest amount of information (in units of MB per second) that can be moved over the external memory interface in a second. It's worked out by multiplying the bus width by the speed of its memory. If the card has DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 in one second. This is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card 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 Render Output Units by the the core 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 output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

GeForce GTX 460 1GB

Amazon.com

Check prices at:

Radeon HD 4550 256MB

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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