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GeForce GTS 450 1GB vs Radeon R7 250X

Intro

The GeForce GTS 450 1GB comes with a clock frequency of 783 MHz and a GDDR5 memory speed of 902 MHz. It also uses a 128-bit memory bus, and makes use of a 40 nm design. It features 192 SPUs, 32 Texture Address Units, and 16 Raster Operation Units.

Compare that to the Radeon R7 250X, which features GPU clock speed of 1000 MHz, and 1024 MB of GDDR5 memory set to run at 1125 MHz through a 128-bit bus. It also is made up of 640 Stream Processors, 40 Texture Address Units, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X 95 Watts
GeForce GTS 450 1GB 106 Watts
Difference: 11 Watts (12%)

Memory Bandwidth

The Radeon R7 250X, in theory, should perform quite a bit faster than the GeForce GTS 450 1GB overall. (explain)

Radeon R7 250X 72000 MB/sec
GeForce GTS 450 1GB 57728 MB/sec
Difference: 14272 (25%)

Texel Rate

The Radeon R7 250X is quite a bit (about 60%) better at texture filtering than the GeForce GTS 450 1GB. (explain)

Radeon R7 250X 40000 Mtexels/sec
GeForce GTS 450 1GB 25056 Mtexels/sec
Difference: 14944 (60%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R7 250X is superior to the GeForce GTS 450 1GB, and very much so. (explain)

Radeon R7 250X 16000 Mpixels/sec
GeForce GTS 450 1GB 12528 Mpixels/sec
Difference: 3472 (28%)

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 1GB

Amazon.com

Check prices at:

Radeon R7 250X

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 1GB Radeon R7 250X
Manufacturer nVidia AMD
Year September 2010 February 2014
Code Name GF106 Cape Verde XT
Memory 1024 MB 1024 MB
Core Speed 783 MHz 1000 MHz
Memory Speed 3608 MHz 4500 MHz
Power (Max TDP) 106 watts 95 watts
Bandwidth 57728 MB/sec 72000 MB/sec
Texel Rate 25056 Mtexels/sec 40000 Mtexels/sec
Pixel Rate 12528 Mpixels/sec 16000 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 1500 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 max amount of information (in units of MB per second) that can be transported across the external memory interface within a second. The number is calculated by multiplying the bus width by the speed of its memory. In the case of DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This number is worked out by multiplying the total 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

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

Display Prices

Hide Prices

GeForce GTS 450 1GB

Amazon.com

Check prices at:

Radeon R7 250X

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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