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GeForce GTS 450 vs Radeon HD 4830 512MB

Intro

The GeForce GTS 450 features a core clock speed of 783 MHz and a GDDR5 memory frequency of 902 MHz. It also uses a 128-bit bus, and uses a 40 nm design. It is made up of 192 SPUs, 32 TAUs, and 16 ROPs.

Compare all of that to the Radeon HD 4830 512MB, which makes use of a 55 nm design. AMD has set the core speed at 575 MHz. The GDDR3 memory runs at a frequency of 900 MHz on this specific model. It features 640(128x5) SPUs as well as 32 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4830 512MB 95 Watts
GeForce GTS 450 106 Watts
Difference: 11 Watts (12%)

Memory Bandwidth

As far as performance goes, the GeForce GTS 450 should in theory be just a bit superior to the Radeon HD 4830 512MB overall. (explain)

GeForce GTS 450 57728 MB/sec
Radeon HD 4830 512MB 57600 MB/sec
Difference: 128 (0%)

Texel Rate

The GeForce GTS 450 is quite a bit (approximately 36%) better at AF than the Radeon HD 4830 512MB. (explain)

GeForce GTS 450 25056 Mtexels/sec
Radeon HD 4830 512MB 18400 Mtexels/sec
Difference: 6656 (36%)

Pixel Rate

The GeForce GTS 450 should be quite a bit (more or less 36%) faster with regards to AA than the Radeon HD 4830 512MB, and should be capable of handling higher resolutions without slowing down too much. (explain)

GeForce GTS 450 12528 Mpixels/sec
Radeon HD 4830 512MB 9200 Mpixels/sec
Difference: 3328 (36%)

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 GTS 450

Amazon.com

Check prices at:

Radeon HD 4830 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 GTS 450 Radeon HD 4830 512MB
Manufacturer nVidia AMD
Year September 2010 Oct 21, 2008
Code Name GF106 RV770 LE
Memory 512 MB 512 MB
Core Speed 783 MHz 575 MHz
Memory Speed 3608 MHz 1800 MHz
Power (Max TDP) 106 watts 95 watts
Bandwidth 57728 MB/sec 57600 MB/sec
Texel Rate 25056 Mtexels/sec 18400 Mtexels/sec
Pixel Rate 12528 Mpixels/sec 9200 Mpixels/sec
Unified Shaders 192 640(128x5)
Texture Mapping Units 32 32
Render Output Units 16 16
Bus Type GDDR5 GDDR3
Bus Width 128-bit 256-bit
Fab Process 40 nm 55 nm
Transistors 1170 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 max amount of information (counted in MB per second) that can be transported past the external memory interface within a second. It is calculated by multiplying the card's bus width by its memory speed. If it uses DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This figure is calculated 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 in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). 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 potential to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce GTS 450

Amazon.com

Check prices at:

Radeon HD 4830 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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