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GeForce GTS 450 vs Radeon R5 M255

Intro

The GeForce GTS 450 uses a 40 nm design. nVidia has clocked the core speed at 783 MHz. The GDDR5 memory works at a speed of 902 MHz on this card. It features 192 SPUs as well as 32 TAUs and 16 Rasterization Operator Units.

Compare all that to the Radeon R5 M255, which has a GPU core clock speed of 940 MHz, and 2048 MB of DDR3 RAM running at 1000 MHz through a 64-bit bus. It also is comprised of 320 Stream Processors, 20 TAUs, and 8 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce GTS 450 should theoretically be a lot faster than the Radeon R5 M255 overall. (explain)

GeForce GTS 450 57728 MB/sec
Radeon R5 M255 16000 MB/sec
Difference: 41728 (261%)

Texel Rate

The GeForce GTS 450 will be much (more or less 33%) faster with regards to anisotropic filtering than the Radeon R5 M255. (explain)

GeForce GTS 450 25056 Mtexels/sec
Radeon R5 M255 18800 Mtexels/sec
Difference: 6256 (33%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTS 450 is a better choice, by far. (explain)

GeForce GTS 450 12528 Mpixels/sec
Radeon R5 M255 7520 Mpixels/sec
Difference: 5008 (67%)

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 GTS 450

Amazon.com

Check prices at:

Radeon R5 M255

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 GTS 450 Radeon R5 M255
Manufacturer nVidia AMD
Year September 2010 June 2014
Code Name GF106 Jet Pro
Memory 512 MB 2048 MB
Core Speed 783 MHz 940 MHz
Memory Speed 3608 MHz 2000 MHz
Power (Max TDP) 106 watts (Unknown) watts
Bandwidth 57728 MB/sec 16000 MB/sec
Texel Rate 25056 Mtexels/sec 18800 Mtexels/sec
Pixel Rate 12528 Mpixels/sec 7520 Mpixels/sec
Unified Shaders 192 320
Texture Mapping Units 32 20
Render Output Units 16 8
Bus Type GDDR5 DDR3
Bus Width 128-bit 64-bit
Fab Process 40 nm 28 nm
Transistors 1170 million (Unknown) million
Bus PCIe x16 PCIe 3.0 x8
DirectX Version DirectX 11 DirectX 11.2
OpenGL Version OpenGL 4.1 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the largest amount of information (in units of megabytes per second) that can be moved across the external memory interface within a second. The number is calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better 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 number of texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

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GeForce GTS 450

Amazon.com

Check prices at:

Radeon R5 M255

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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