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GeForce GT 430 1GB vs GeForce GTX 650

Intro

The GeForce GT 430 1GB features core clock speeds of 700 MHz on the GPU, and 900 MHz on the 1024 MB of GDDR3 RAM. It features 96 SPUs along with 16 Texture Address Units and 4 ROPs.

Compare those specs to the GeForce GTX 650, which has GPU core speed of 1058 MHz, and 1024 MB of GDDR5 memory running at 1250 MHz through a 128-bit bus. It also is comprised of 384 Stream Processors, 32 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 430 1GB 60 Watts
GeForce GTX 650 64 Watts
Difference: 4 Watts (7%)

Memory Bandwidth

In theory, the GeForce GTX 650 should be 178% faster than the GeForce GT 430 1GB overall, due to its greater bandwidth. (explain)

GeForce GTX 650 80000 MB/sec
GeForce GT 430 1GB 28800 MB/sec
Difference: 51200 (178%)

Texel Rate

The GeForce GTX 650 will be quite a bit (about 202%) more effective at anisotropic filtering than the GeForce GT 430 1GB. (explain)

GeForce GTX 650 33856 Mtexels/sec
GeForce GT 430 1GB 11200 Mtexels/sec
Difference: 22656 (202%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 650 is a better choice, by far. (explain)

GeForce GTX 650 16928 Mpixels/sec
GeForce GT 430 1GB 2800 Mpixels/sec
Difference: 14128 (505%)

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

GeForce GT 430 1GB

GeForce GTX 650

Specifications

Display Specifications

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Model GeForce GT 430 1GB GeForce GTX 650
Manufacturer nVidia nVidia
Year October 2010 September 2012
Code Name GF108 GK107
Memory 1024 MB 1024 MB
Core Speed 700 MHz 1058 MHz
Memory Speed 1800 MHz 5000 MHz
Power (Max TDP) 60 watts 64 watts
Bandwidth 28800 MB/sec 80000 MB/sec
Texel Rate 11200 Mtexels/sec 33856 Mtexels/sec
Pixel Rate 2800 Mpixels/sec 16928 Mpixels/sec
Unified Shaders 96 384
Texture Mapping Units 16 32
Render Output Units 4 16
Bus Type GDDR3 GDDR5
Bus Width 128-bit 128-bit
Fab Process 40 nm 28 nm
Transistors 585 million 1300 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.0
OpenGL Version OpenGL 4.1 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the largest amount of information (measured in megabytes per second) that can be moved across the external memory interface in a second. The number is worked out by multiplying the interface width by its memory speed. If it uses DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

GeForce GT 430 1GB

GeForce GTX 650

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