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GeForce 8400 GS 512MB vs Radeon R7 250X 2GB

Intro

The GeForce 8400 GS 512MB makes use of a 80 nm design. nVidia has clocked the core speed at 650 MHz. The DDR2 RAM is set to run at a speed of 400 MHz on this card. It features 16 SPUs as well as 8 Texture Address Units and 4 Rasterization Operator Units.

Compare all of that to the Radeon R7 250X 2GB, which makes use of a 28 nm design. AMD has clocked the core frequency at 1000 MHz. The GDDR5 RAM works at a frequency of 1125 MHz on this specific card. It features 640 SPUs along with 40 TAUs and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8400 GS 512MB 40 Watts
Radeon R7 250X 2GB 95 Watts
Difference: 55 Watts (138%)

Memory Bandwidth

As far as performance goes, the Radeon R7 250X 2GB should in theory be quite a bit better than the GeForce 8400 GS 512MB overall. (explain)

Radeon R7 250X 2GB 72000 MB/sec
GeForce 8400 GS 512MB 6400 MB/sec
Difference: 65600 (1025%)

Texel Rate

The Radeon R7 250X 2GB is much (about 669%) faster with regards to AF than the GeForce 8400 GS 512MB. (explain)

Radeon R7 250X 2GB 40000 Mtexels/sec
GeForce 8400 GS 512MB 5200 Mtexels/sec
Difference: 34800 (669%)

Pixel Rate

The Radeon R7 250X 2GB is quite a bit (about 515%) more effective at FSAA than the GeForce 8400 GS 512MB, and will be able to handle higher screen resolutions more effectively. (explain)

Radeon R7 250X 2GB 16000 Mpixels/sec
GeForce 8400 GS 512MB 2600 Mpixels/sec
Difference: 13400 (515%)

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 8400 GS 512MB

Amazon.com

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Radeon R7 250X 2GB

Amazon.com

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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 8400 GS 512MB Radeon R7 250X 2GB
Manufacturer nVidia AMD
Year June 2007 February 2014
Code Name G86 Cape Verde XT
Memory 512 MB 2048 MB
Core Speed 650 MHz 1000 MHz
Memory Speed 800 MHz 4500 MHz
Power (Max TDP) 40 watts 95 watts
Bandwidth 6400 MB/sec 72000 MB/sec
Texel Rate 5200 Mtexels/sec 40000 Mtexels/sec
Pixel Rate 2600 Mpixels/sec 16000 Mpixels/sec
Unified Shaders 16 640
Texture Mapping Units 8 40
Render Output Units 4 16
Bus Type DDR2 GDDR5
Bus Width 64-bit 128-bit
Fab Process 80 nm 28 nm
Transistors 210 million 1500 million
Bus PCIe x16, PCI PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 11.2
OpenGL Version OpenGL 3.0 OpenGL 4.3

Memory Bandwidth: Bandwidth is the largest amount of information (measured in MB per second) that can be moved past the external memory interface within a second. It's calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total amount of texture units of the card by the core 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 per second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many 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 8400 GS 512MB

Amazon.com

Check prices at:

Radeon R7 250X 2GB

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.

Comments

One Response to “GeForce 8400 GS 512MB vs Radeon R7 250X 2GB”
Ernesto Guerra says:

Excelente tarjeta de radeon r7 250 de verdad q la recomiendo tiene un impresionante rendimiento probado en todo tipo de juegos

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