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GeForce GT 430 1GB vs Radeon HD 4650 512MB

Intro

The GeForce GT 430 1GB comes with a core clock speed of 700 MHz and a GDDR3 memory frequency of 900 MHz. It also makes use of a 128-bit bus, and uses a 40 nm design. It features 96 SPUs, 16 TAUs, and 4 ROPs.

Compare that to the Radeon HD 4650 512MB, which has a GPU core clock speed of 600 MHz, and 512 MB of DDR2 RAM running at 500 MHz through a 128-bit bus. It also features 320(64x5) SPUs, 32 Texture Address Units, and 8 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4650 512MB 55 Watts
GeForce GT 430 1GB 60 Watts
Difference: 5 Watts (9%)

Memory Bandwidth

Theoretically speaking, the GeForce GT 430 1GB should be much faster than the Radeon HD 4650 512MB in general. (explain)

GeForce GT 430 1GB 28800 MB/sec
Radeon HD 4650 512MB 16000 MB/sec
Difference: 12800 (80%)

Texel Rate

The Radeon HD 4650 512MB should be quite a bit (approximately 71%) more effective at AF than the GeForce GT 430 1GB. (explain)

Radeon HD 4650 512MB 19200 Mtexels/sec
GeForce GT 430 1GB 11200 Mtexels/sec
Difference: 8000 (71%)

Pixel Rate

The Radeon HD 4650 512MB should be quite a bit (more or less 71%) more effective at FSAA than the GeForce GT 430 1GB, and also will be able to handle higher resolutions without slowing down too much. (explain)

Radeon HD 4650 512MB 4800 Mpixels/sec
GeForce GT 430 1GB 2800 Mpixels/sec
Difference: 2000 (71%)

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

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Radeon HD 4650 512MB

Amazon.com

Check prices at:

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 Radeon HD 4650 512MB
Manufacturer nVidia AMD
Year October 2010 Sep 10, 2008
Code Name GF108 RV730 PRO
Memory 1024 MB 512 MB
Core Speed 700 MHz 600 MHz
Memory Speed 1800 MHz 1000 MHz
Power (Max TDP) 60 watts 55 watts
Bandwidth 28800 MB/sec 16000 MB/sec
Texel Rate 11200 Mtexels/sec 19200 Mtexels/sec
Pixel Rate 2800 Mpixels/sec 4800 Mpixels/sec
Unified Shaders 96 320(64x5)
Texture Mapping Units 16 32
Render Output Units 4 8
Bus Type GDDR3 DDR2
Bus Width 128-bit 128-bit
Fab Process 40 nm 55 nm
Transistors 585 million 514 million
Bus PCIe x16 PCIe 2.0 x16, AGP 8x
DirectX Version DirectX 11 DirectX 10.1
OpenGL Version OpenGL 4.1 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the maximum amount of information (counted in megabytes per second) that can be transported over the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher this number, 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 most pixels that the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

GeForce GT 430 1GB

Amazon.com

Check prices at:

Radeon HD 4650 512MB

Amazon.com

Check prices at:

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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