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GeForce GT 430 vs GeForce GTS 250 1GB

Intro

The GeForce GT 430 comes with core speeds of 700 MHz on the GPU, and 900 MHz on the 512 MB of GDDR3 memory. It features 96 SPUs along with 16 Texture Address Units and 4 Rasterization Operator Units.

Compare all that to the GeForce GTS 250 1GB, which uses a 65/55 nm design. nVidia has clocked the core frequency at 738 MHz. The GDDR3 RAM is set to run at a frequency of 1100 MHz on this model. It features 128 SPUs as well as 64 Texture Address Units and 16 Rasterization Operator Units.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 430 60 Watts
GeForce GTS 250 1GB 145 Watts
Difference: 85 Watts (142%)

Memory Bandwidth

In theory, the GeForce GTS 250 1GB should perform quite a bit faster than the GeForce GT 430 overall. (explain)

GeForce GTS 250 1GB 70400 MB/sec
GeForce GT 430 28800 MB/sec
Difference: 41600 (144%)

Texel Rate

The GeForce GTS 250 1GB is much (more or less 322%) better at AF than the GeForce GT 430. (explain)

GeForce GTS 250 1GB 47232 Mtexels/sec
GeForce GT 430 11200 Mtexels/sec
Difference: 36032 (322%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTS 250 1GB is a better choice, by a large margin. (explain)

GeForce GTS 250 1GB 11808 Mpixels/sec
GeForce GT 430 2800 Mpixels/sec
Difference: 9008 (322%)

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

Amazon.com

GeForce GTS 250 1GB

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

Model GeForce GT 430 GeForce GTS 250 1GB
Manufacturer nVidia nVidia
Year October 2010 March 3, 2009
Code Name GF108 G92a/b
Fab Process 40 nm 65/55 nm
Bus PCIe x16 PCIe x16 2.0
Memory 512 MB 1024 MB
Core Speed 700 MHz 738 MHz
Shader Speed 1400 MHz 1836 MHz
Memory Speed 900 MHz (1800 MHz effective) 1100 MHz (2200 MHz effective)
Unified Shaders 96 128
Texture Mapping Units 16 64
Render Output Units 4 16
Bus Type GDDR3 GDDR3
Bus Width 128-bit 256-bit
DirectX Version DirectX 11 DirectX 10
OpenGL Version OpenGL 4.1 OpenGL 3.1
Power (Max TDP) 60 watts 145 watts
Shader Model 5.0 4.0
Bandwidth 28800 MB/sec 70400 MB/sec
Texel Rate 11200 Mtexels/sec 47232 Mtexels/sec
Pixel Rate 2800 Mpixels/sec 11808 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the largest amount of data (measured in MB per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the interface width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This 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 card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to its 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 the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

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