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GeForce 8300 GS (OEM) vs GeForce 8400 GS 512MB

Intro

The GeForce 8300 GS (OEM) features a clock speed of 450 MHz and a DDR2 memory frequency of 400 MHz. It also uses a 64-bit memory bus, and uses a 80 nm design. It features 8 SPUs, 4 TAUs, and 2 ROPs.

Compare all that to the GeForce 8400 GS 512MB, which has core speeds of 650 MHz on the GPU, and 400 MHz on the 512 MB of DDR2 memory. It features 16 SPUs along with 8 TAUs and 4 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

Both cards have exactly the same memory bandwidth, so in theory they should have identical performance. (explain)

Texel Rate

The GeForce 8400 GS 512MB is a lot (about 189%) faster with regards to texture filtering than the GeForce 8300 GS (OEM). (explain)

GeForce 8400 GS 512MB 5200 Mtexels/sec
GeForce 8300 GS (OEM) 1800 Mtexels/sec
Difference: 3400 (189%)

Pixel Rate

The GeForce 8400 GS 512MB is much (about 189%) more effective at full screen anti-aliasing than the GeForce 8300 GS (OEM), and also capable of handling higher resolutions better. (explain)

GeForce 8400 GS 512MB 2600 Mpixels/sec
GeForce 8300 GS (OEM) 900 Mpixels/sec
Difference: 1700 (189%)

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 8300 GS (OEM)

Amazon.com

Check prices at:

GeForce 8400 GS 512MB

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 8300 GS (OEM) GeForce 8400 GS 512MB
Manufacturer nVidia nVidia
Year July 2007 June 2007
Code Name G86 G86
Memory 128 MB 512 MB
Core Speed 450 MHz 650 MHz
Memory Speed 800 MHz 800 MHz
Power (Max TDP) 40 watts 40 watts
Bandwidth 6400 MB/sec 6400 MB/sec
Texel Rate 1800 Mtexels/sec 5200 Mtexels/sec
Pixel Rate 900 Mpixels/sec 2600 Mpixels/sec
Unified Shaders 8 16
Texture Mapping Units 4 8
Render Output Units 2 4
Bus Type DDR2 DDR2
Bus Width 64-bit 64-bit
Fab Process 80 nm 80 nm
Transistors 210 million 210 million
Bus PCI Express x16 PCIe x16, PCI
DirectX Version DirectX 10 DirectX 10
OpenGL Version OpenGL 3.0 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the max amount of data (measured in megabytes per second) that can be moved over the external memory interface in a second. It is calculated by multiplying the interface width by its memory speed. If the card has DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher 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 number of texture map elements (texels) that are applied in one second. This is calculated by multiplying the total amount 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 the video card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

GeForce 8300 GS (OEM)

Amazon.com

Check prices at:

GeForce 8400 GS 512MB

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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