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GeForce GTS 450 vs Radeon HD 4730

Intro

The GeForce GTS 450 features a GPU clock speed of 783 MHz, and the 512 MB of GDDR5 RAM is set to run at 902 MHz through a 128-bit bus. It also is comprised of 192 Stream Processors, 32 Texture Address Units, and 16 Raster Operation Units.

Compare that to the Radeon HD 4730, which features core clock speeds of 700 MHz on the GPU, and 900 MHz on the 512 MB of GDDR5 memory. It features 640(128x5) SPUs along with 32 Texture Address Units and 8 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 450 106 Watts
Radeon HD 4730 140 Watts
Difference: 34 Watts (32%)

Memory Bandwidth

As far as performance goes, the GeForce GTS 450 should in theory be a small bit better than the Radeon HD 4730 overall. (explain)

GeForce GTS 450 57728 MB/sec
Radeon HD 4730 57600 MB/sec
Difference: 128 (0%)

Texel Rate

The GeForce GTS 450 will be a bit (more or less 12%) more effective at texture filtering than the Radeon HD 4730. (explain)

GeForce GTS 450 25056 Mtexels/sec
Radeon HD 4730 22400 Mtexels/sec
Difference: 2656 (12%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTS 450 is the winner, by far. (explain)

GeForce GTS 450 12528 Mpixels/sec
Radeon HD 4730 5600 Mpixels/sec
Difference: 6928 (124%)

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 4730

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 4730
Manufacturer nVidia AMD
Year September 2010 Jun 8, 2009
Code Name GF106 RV770/CE
Memory 512 MB 512 MB
Core Speed 783 MHz 700 MHz
Memory Speed 3608 MHz 3600 MHz
Power (Max TDP) 106 watts 140 watts
Bandwidth 57728 MB/sec 57600 MB/sec
Texel Rate 25056 Mtexels/sec 22400 Mtexels/sec
Pixel Rate 12528 Mpixels/sec 5600 Mpixels/sec
Unified Shaders 192 640(128x5)
Texture Mapping Units 32 32
Render Output Units 16 8
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-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 maximum amount of data (in units of megabytes per second) that can be transferred across the external memory interface within a second. It's worked out by multiplying the interface width by the speed of its memory. If it uses DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Display Prices

Hide Prices

GeForce GTS 450

Amazon.com

Check prices at:

Radeon HD 4730

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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