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GeForce GTS 450 1GB vs Radeon HD 4730

Intro

The GeForce GTS 450 1GB features a clock frequency of 783 MHz and a GDDR5 memory frequency of 902 MHz. It also makes use of a 128-bit memory bus, and makes use of a 40 nm design. It is comprised of 192 SPUs, 32 Texture Address Units, and 16 Raster Operation Units.

Compare all of that to the Radeon HD 4730, which has a core clock speed of 700 MHz and a GDDR5 memory frequency of 900 MHz. It also makes use of a 128-bit memory bus, and makes use of a 55 nm design. It is comprised of 640(128x5) SPUs, 32 TAUs, and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 450 1GB 106 Watts
Radeon HD 4730 140 Watts
Difference: 34 Watts (32%)

Memory Bandwidth

As far as performance goes, the GeForce GTS 450 1GB should in theory be a little bit superior to the Radeon HD 4730 in general. (explain)

GeForce GTS 450 1GB 57728 MB/sec
Radeon HD 4730 57600 MB/sec
Difference: 128 (0%)

Texel Rate

The GeForce GTS 450 1GB should be a little bit (more or less 12%) faster with regards to texture filtering than the Radeon HD 4730. (explain)

GeForce GTS 450 1GB 25056 Mtexels/sec
Radeon HD 4730 22400 Mtexels/sec
Difference: 2656 (12%)

Pixel Rate

The GeForce GTS 450 1GB should be much (more or less 124%) more effective at AA than the Radeon HD 4730, and also should be capable of handling higher screen resolutions better. (explain)

GeForce GTS 450 1GB 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 1GB

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 1GB Radeon HD 4730
Manufacturer nVidia AMD
Year September 2010 Jun 8, 2009
Code Name GF106 RV770/CE
Memory 1024 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 max amount of data (in units of megabytes per second) that can be transferred over the external memory interface within a second. It's worked out by multiplying the interface width by its memory clock speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total texture units by the core speed of the chip. The higher the texel rate, 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 that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour 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 lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

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GeForce GTS 450 1GB

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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