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GeForce GTX 470 vs Radeon HD 4830 1GB

Intro

The GeForce GTX 470 comes with a GPU core speed of 607 MHz, and the 1280 MB of GDDR5 memory runs at 837 MHz through a 320-bit bus. It also is comprised of 448 SPUs, 56 Texture Address Units, and 40 ROPs.

Compare those specifications to the Radeon HD 4830 1GB, which features a core clock frequency of 575 MHz and a GDDR4 memory speed of 900 MHz. It also features a 256-bit memory bus, and makes use of a 55 nm design. It features 640(128x5) SPUs, 32 TAUs, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4830 1GB 95 Watts
GeForce GTX 470 215 Watts
Difference: 120 Watts (126%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 470 should theoretically be quite a bit better than the Radeon HD 4830 1GB overall. (explain)

GeForce GTX 470 133920 MB/sec
Radeon HD 4830 1GB 57600 MB/sec
Difference: 76320 (133%)

Texel Rate

The GeForce GTX 470 will be quite a bit (approximately 85%) more effective at texture filtering than the Radeon HD 4830 1GB. (explain)

GeForce GTX 470 33992 Mtexels/sec
Radeon HD 4830 1GB 18400 Mtexels/sec
Difference: 15592 (85%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 470 is superior to the Radeon HD 4830 1GB, and very much so. (explain)

GeForce GTX 470 24280 Mpixels/sec
Radeon HD 4830 1GB 9200 Mpixels/sec
Difference: 15080 (164%)

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 GTX 470

Amazon.com

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Radeon HD 4830 1GB

Amazon.com

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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 GTX 470 Radeon HD 4830 1GB
Manufacturer nVidia AMD
Year March 2010 Oct 21, 2008
Code Name GF100 RV770 LE
Memory 1280 MB 1024 MB
Core Speed 607 MHz 575 MHz
Memory Speed 3348 MHz 1800 MHz
Power (Max TDP) 215 watts 95 watts
Bandwidth 133920 MB/sec 57600 MB/sec
Texel Rate 33992 Mtexels/sec 18400 Mtexels/sec
Pixel Rate 24280 Mpixels/sec 9200 Mpixels/sec
Unified Shaders 448 640(128x5)
Texture Mapping Units 56 32
Render Output Units 40 16
Bus Type GDDR5 GDDR4
Bus Width 320-bit 256-bit
Fab Process 40 nm 55 nm
Transistors 3000 million 956 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 maximum amount of information (counted in MB per second) that can be transported across the external memory interface in a second. It is calculated by multiplying the interface width by the speed of its memory. If the card has DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the the card's 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 lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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GeForce GTX 470

Amazon.com

Check prices at:

Radeon HD 4830 1GB

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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