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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 clocked the core speed at 783 MHz. The GDDR5 RAM works at a speed of 902 MHz on this card. It features 192 SPUs along with 32 TAUs and 16 ROPs.

Compare all of that to the Radeon R5 M255, which has core clock speeds of 940 MHz on the GPU, and 1000 MHz on the 2048 MB of DDR3 memory. It features 320 SPUs along with 20 TAUs and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce GTS 450 should in theory perform 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 should be much (approximately 33%) more effective at AF 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 a high resolution is important to you, then the GeForce GTS 450 is superior to the Radeon R5 M255, 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: Bandwidth is the largest amount of information (in units of MB per second) that can be transported past the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory speed. In the case of DDR memory, it must be multiplied by 2 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 high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. 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 rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential 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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