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GeForce 8400 GS 512MB vs Radeon R9 M385X

Intro

The GeForce 8400 GS 512MB has a core clock frequency of 650 MHz and a DDR2 memory frequency of 400 MHz. It also makes use of a 64-bit memory bus, and makes use of a 80 nm design. It is comprised of 16 SPUs, 8 TAUs, and 4 ROPs.

Compare all of that to the Radeon R9 M385X, which features GPU clock speed of 1100 MHz, and 4096 MB of GDDR5 RAM set to run at 1500 MHz through a 128-bit bus. It also is comprised of 896 Stream Processors, 56 TAUs, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the Radeon R9 M385X should theoretically be much better than the GeForce 8400 GS 512MB overall. (explain)

Radeon R9 M385X 96000 MB/sec
GeForce 8400 GS 512MB 6400 MB/sec
Difference: 89600 (1400%)

Texel Rate

The Radeon R9 M385X should be quite a bit (approximately 1085%) faster with regards to texture filtering than the GeForce 8400 GS 512MB. (explain)

Radeon R9 M385X 61600 Mtexels/sec
GeForce 8400 GS 512MB 5200 Mtexels/sec
Difference: 56400 (1085%)

Pixel Rate

The Radeon R9 M385X is a lot (approximately 577%) better at anti-aliasing than the GeForce 8400 GS 512MB, and also able to handle higher resolutions without slowing down too much. (explain)

Radeon R9 M385X 17600 Mpixels/sec
GeForce 8400 GS 512MB 2600 Mpixels/sec
Difference: 15000 (577%)

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

Check prices at:

Radeon R9 M385X

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 8400 GS 512MB Radeon R9 M385X
Manufacturer nVidia AMD
Year June 2007 2015
Code Name G86 Bonaire
Memory 512 MB 4096 MB
Core Speed 650 MHz 1100 MHz
Memory Speed 800 MHz 6000 MHz
Power (Max TDP) 40 watts (Unknown) watts
Bandwidth 6400 MB/sec 96000 MB/sec
Texel Rate 5200 Mtexels/sec 61600 Mtexels/sec
Pixel Rate 2600 Mpixels/sec 17600 Mpixels/sec
Unified Shaders 16 896
Texture Mapping Units 8 56
Render Output Units 4 16
Bus Type DDR2 GDDR5
Bus Width 64-bit 128-bit
Fab Process 80 nm 28 nm
Transistors 210 million (Unknown) million
Bus PCIe x16, PCI PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 12
OpenGL Version OpenGL 3.0 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the largest amount of data (measured in MB per second) that can be transferred over the external memory interface within a second. It is calculated by multiplying the interface width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, 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 texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The higher this number, 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 chip could possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

GeForce 8400 GS 512MB

Amazon.com

Check prices at:

Radeon R9 M385X

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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