GeForce 8400 GS 512MB vs GeForce GT 1030

Intro

Compare those specs to the GeForce GT 1030, which comes with clock speeds of 1265 MHz on the GPU, and 1502 MHz on the 2048 MB of GDDR5 memory. It features 384 SPUs as well as 32 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 1030		30 Watts
GeForce 8400 GS 512MB		40 Watts
	Difference: 10 Watts (33%)

Memory Bandwidth

As far as performance goes, the GeForce GT 1030 should theoretically be much superior to the GeForce 8400 GS 512MB in general. (explain)

GeForce GT 1030		49152 MB/sec
GeForce 8400 GS 512MB		6400 MB/sec
	Difference: 42752 (668%)

Texel Rate

The GeForce GT 1030 will be quite a bit (about 678%) more effective at texture filtering than the GeForce 8400 GS 512MB. (explain)

GeForce GT 1030		40480 Mtexels/sec
GeForce 8400 GS 512MB		5200 Mtexels/sec
	Difference: 35280 (678%)

Pixel Rate

The GeForce GT 1030 should be much (about 678%) more effective at FSAA than the GeForce 8400 GS 512MB, and will be able to handle higher resolutions better. (explain)

GeForce GT 1030		20240 Mpixels/sec
GeForce 8400 GS 512MB		2600 Mpixels/sec
	Difference: 17640 (678%)

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

Specifications

Memory Bandwidth: Bandwidth is the max amount of information (counted in megabytes per second) that can be transported across the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This number is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out 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 output rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.