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GeForce 9400 GT 256MB vs Radeon R7 250X 2GB

Intro

The GeForce 9400 GT 256MB comes with clock speeds of 550 MHz on the GPU, and 400 MHz on the 256 MB of GDDR2 memory. It features 16 SPUs as well as 8 TAUs and 4 ROPs.

Compare those specifications to the Radeon R7 250X 2GB, which has a clock speed of 1000 MHz and a GDDR5 memory speed of 1125 MHz. It also uses a 128-bit bus, and makes use of a 28 nm design. It is comprised of 640 SPUs, 40 TAUs, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9400 GT 256MB 50 Watts
Radeon R7 250X 2GB 95 Watts
Difference: 45 Watts (90%)

Memory Bandwidth

Performance-wise, the Radeon R7 250X 2GB should theoretically be a lot superior to the GeForce 9400 GT 256MB overall. (explain)

Radeon R7 250X 2GB 72000 MB/sec
GeForce 9400 GT 256MB 12800 MB/sec
Difference: 59200 (463%)

Texel Rate

The Radeon R7 250X 2GB should be much (approximately 809%) faster with regards to anisotropic filtering than the GeForce 9400 GT 256MB. (explain)

Radeon R7 250X 2GB 40000 Mtexels/sec
GeForce 9400 GT 256MB 4400 Mtexels/sec
Difference: 35600 (809%)

Pixel Rate

The Radeon R7 250X 2GB will be quite a bit (approximately 627%) faster with regards to FSAA than the GeForce 9400 GT 256MB, and also able to handle higher screen resolutions without slowing down too much. (explain)

Radeon R7 250X 2GB 16000 Mpixels/sec
GeForce 9400 GT 256MB 2200 Mpixels/sec
Difference: 13800 (627%)

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 9400 GT 256MB

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.

Specifications

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Model GeForce 9400 GT 256MB Radeon R7 250X 2GB
Manufacturer nVidia AMD
Year August 2008 February 2014
Code Name G96a Cape Verde XT
Memory 256 MB 2048 MB
Core Speed 550 MHz 1000 MHz
Memory Speed 800 MHz 4500 MHz
Power (Max TDP) 50 watts 95 watts
Bandwidth 12800 MB/sec 72000 MB/sec
Texel Rate 4400 Mtexels/sec 40000 Mtexels/sec
Pixel Rate 2200 Mpixels/sec 16000 Mpixels/sec
Unified Shaders 16 640
Texture Mapping Units 8 40
Render Output Units 4 16
Bus Type GDDR2 GDDR5
Bus Width 128-bit 128-bit
Fab Process 65 nm 28 nm
Transistors 314 million 1500 million
Bus PCIe x16 2.0, PCI PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 11.2
OpenGL Version OpenGL 3.0 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the max amount of information (in units of megabytes per second) that can be transported over the external memory interface in a second. It is worked out by multiplying the interface width by its memory speed. If it uses DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better 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 number of texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total number of texture units of the card by the core 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 a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce 9400 GT 256MB

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.

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