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GeForce GT 430 1GB vs GeForce GTX 650


Intro

The GeForce GT 430 1GB comes with a GPU clock speed of 700 MHz, and the 1024 MB of GDDR3 RAM is set to run at 900 MHz through a 128-bit bus. It also is made up of 96 SPUs, 16 Texture Address Units, and 4 ROPs.

Compare those specs to the GeForce GTX 650, which features a GPU core clock speed of 1058 MHz, and 1024 MB of GDDR5 RAM running at 1250 MHz through a 128-bit bus. It also is comprised of 384 Stream Processors, 32 Texture Address Units, and 16 Raster Operation Units.

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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

Performance-wise, the GeForce GTX 650 should in theory be a lot superior to the GeForce GT 430 1GB in general. (explain)

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

Texel Rate

The GeForce GTX 650 should be quite a bit (more or less 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

The GeForce GTX 650 will be much (more or less 505%) better at AA than the GeForce GT 430 1GB, and able to handle higher screen resolutions more effectively. (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

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GeForce GT 430 1GB

Amazon.com

GeForce GTX 650

Amazon.com

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 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 max amount of information (measured in megabytes per second) that can be transferred past the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory speed. If it uses DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This figure is worked out 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 per 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 worked out by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. 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 potential to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce GT 430 1GB

Amazon.com

GeForce GTX 650

Amazon.com

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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