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GeForce GTS 450 vs Radeon R5 M255

Intro

The GeForce GTS 450 makes use of a 40 nm design. nVidia has set the core frequency at 783 MHz. The GDDR5 RAM is set to run at a frequency of 902 MHz on this model. It features 192 SPUs along with 32 Texture Address Units and 16 ROPs.

Compare that to the Radeon R5 M255, which makes use of a 28 nm design. AMD has set the core speed at 940 MHz. The DDR3 RAM works at a frequency of 1000 MHz on this card. It features 320 SPUs as well as 20 TAUs and 8 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce GTS 450 should theoretically perform much faster than the Radeon R5 M255 in general. (explain)

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

Texel Rate

The GeForce GTS 450 should be a lot (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 using high levels of AA is important to you, then the GeForce GTS 450 is the winner, by a large margin. (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 maximum amount of information (measured in MB per second) that can be transferred past the external memory interface within a second. It's worked out by multiplying the bus width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This figure is calculated 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, especially 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 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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