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GeForce GT 430 vs Radeon HD 4770

Intro

The GeForce GT 430 has a GPU core clock speed of 700 MHz, and the 512 MB of GDDR3 RAM runs at 900 MHz through a 128-bit bus. It also is comprised of 96 SPUs, 16 Texture Address Units, and 4 ROPs.

Compare all of that to the Radeon HD 4770, which has a clock frequency of 750 MHz and a GDDR5 memory speed of 800 MHz. It also features a 128-bit memory bus, and uses a 40 nm design. It is made up of 640(128x5) SPUs, 32 TAUs, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 430 60 Watts
Radeon HD 4770 80 Watts
Difference: 20 Watts (33%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 4770 should be 78% faster than the GeForce GT 430 overall, because of its greater data rate. (explain)

Radeon HD 4770 51200 MB/sec
GeForce GT 430 28800 MB/sec
Difference: 22400 (78%)

Texel Rate

The Radeon HD 4770 is a lot (about 114%) faster with regards to texture filtering than the GeForce GT 430. (explain)

Radeon HD 4770 24000 Mtexels/sec
GeForce GT 430 11200 Mtexels/sec
Difference: 12800 (114%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon HD 4770 is a better choice, and very much so. (explain)

Radeon HD 4770 12000 Mpixels/sec
GeForce GT 430 2800 Mpixels/sec
Difference: 9200 (329%)

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

Amazon.com

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Radeon HD 4770

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 Radeon HD 4770
Manufacturer nVidia AMD
Year October 2010 Apr 28, 2009
Code Name GF108 RV740
Memory 512 MB 512 MB
Core Speed 700 MHz 750 MHz
Memory Speed 1800 MHz 3200 MHz
Power (Max TDP) 60 watts 80 watts
Bandwidth 28800 MB/sec 51200 MB/sec
Texel Rate 11200 Mtexels/sec 24000 Mtexels/sec
Pixel Rate 2800 Mpixels/sec 12000 Mpixels/sec
Unified Shaders 96 640(128x5)
Texture Mapping Units 16 32
Render Output Units 4 16
Bus Type GDDR3 GDDR5
Bus Width 128-bit 128-bit
Fab Process 40 nm 40 nm
Transistors 585 million 826 million
Bus PCIe x16 PCIe 2.0 x16
DirectX Version DirectX 11 DirectX 10.1
OpenGL Version OpenGL 4.1 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the largest amount of information (in units of MB per second) that can be transferred across the external memory interface in a second. The number is calculated by multiplying the interface width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the 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 number of texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total texture units of the card by the core 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 in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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GeForce GT 430

Amazon.com

Check prices at:

Radeon HD 4770

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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