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GeForce GT 430 1GB vs GeForce GTX 650


Intro

The GeForce GT 430 1GB has clock speeds of 700 MHz on the GPU, and 900 MHz on the 1024 MB of GDDR3 memory. It features 96 SPUs as well as 16 TAUs and 4 ROPs.

Compare all of that to the GeForce GTX 650, which features a clock frequency of 1058 MHz and a GDDR5 memory speed of 1250 MHz. It also uses a 128-bit memory bus, and uses a 28 nm design. It is made up of 384 SPUs, 32 Texture Address Units, and 16 Raster Operation Units.

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

Theoretically, the GeForce GTX 650 should perform much faster than 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 will be quite a bit (about 202%) better at texture 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 using high levels of AA is important to you, then the GeForce GTX 650 is superior to the GeForce GT 430 1GB, 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: Bandwidth is the max amount of data (counted in MB per second) that can be moved past the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory speed. If the card has DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs 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 rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

GeForce GT 430 1GB

GeForce GTX 650

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