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GeForce GTS 450 vs Radeon R9 M275X

Intro

The GeForce GTS 450 comes with a clock speed of 783 MHz and a GDDR5 memory frequency of 902 MHz. It also features a 128-bit memory bus, and makes use of a 40 nm design. It is comprised of 192 SPUs, 32 Texture Address Units, and 16 ROPs.

Compare those specifications to the Radeon R9 M275X, which has GPU core speed of 900 MHz, and 2048 MB of GDDR5 memory running at 1125 MHz through a 128-bit bus. It also is comprised of 640 SPUs, 40 TAUs, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M275X 50 Watts
GeForce GTS 450 106 Watts
Difference: 56 Watts (112%)

Memory Bandwidth

Theoretically, the Radeon R9 M275X should perform quite a bit faster than the GeForce GTS 450 overall. (explain)

Radeon R9 M275X 72000 MB/sec
GeForce GTS 450 57728 MB/sec
Difference: 14272 (25%)

Texel Rate

The Radeon R9 M275X should be much (approximately 44%) faster with regards to texture filtering than the GeForce GTS 450. (explain)

Radeon R9 M275X 36000 Mtexels/sec
GeForce GTS 450 25056 Mtexels/sec
Difference: 10944 (44%)

Pixel Rate

The Radeon R9 M275X will be a bit (approximately 15%) more effective at AA than the GeForce GTS 450, and also able to handle higher screen resolutions while still performing well. (explain)

Radeon R9 M275X 14400 Mpixels/sec
GeForce GTS 450 12528 Mpixels/sec
Difference: 1872 (15%)

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 R9 M275X

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 R9 M275X
Manufacturer nVidia AMD
Year September 2010 May 1 2014
Code Name GF106 Venus XTX
Memory 512 MB 2048 MB
Core Speed 783 MHz 900 MHz
Memory Speed 3608 MHz 4500 MHz
Power (Max TDP) 106 watts 50 watts
Bandwidth 57728 MB/sec 72000 MB/sec
Texel Rate 25056 Mtexels/sec 36000 Mtexels/sec
Pixel Rate 12528 Mpixels/sec 14400 Mpixels/sec
Unified Shaders 192 640
Texture Mapping Units 32 40
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 40 nm 28 nm
Transistors 1170 million (Unknown) million
Bus PCIe x16 PCIe 3.0 x16
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 (counted in megabytes per second) that can be moved past the external memory interface within a second. The number is worked out by multiplying the interface width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better this number, 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 maximum amount of pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the core 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 output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce GTS 450

Amazon.com

Check prices at:

Radeon R9 M275X

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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