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GeForce GTS 450 vs Radeon HD 4830 1GB

Intro

The GeForce GTS 450 comes with a GPU clock speed of 783 MHz, and the 512 MB of GDDR5 RAM runs at 902 MHz through a 128-bit bus. It also is made up of 192 Stream Processors, 32 TAUs, and 16 ROPs.

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

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4830 1GB 95 Watts
GeForce GTS 450 106 Watts
Difference: 11 Watts (12%)

Memory Bandwidth

Theoretically speaking, the GeForce GTS 450 should be a little bit faster than the Radeon HD 4830 1GB overall. (explain)

GeForce GTS 450 57728 MB/sec
Radeon HD 4830 1GB 57600 MB/sec
Difference: 128 (0%)

Texel Rate

The GeForce GTS 450 is a lot (more or less 36%) better at anisotropic filtering than the Radeon HD 4830 1GB. (explain)

GeForce GTS 450 25056 Mtexels/sec
Radeon HD 4830 1GB 18400 Mtexels/sec
Difference: 6656 (36%)

Pixel Rate

The GeForce GTS 450 will be quite a bit (more or less 36%) faster with regards to anti-aliasing than the Radeon HD 4830 1GB, and should be able to handle higher resolutions without losing too much performance. (explain)

GeForce GTS 450 12528 Mpixels/sec
Radeon HD 4830 1GB 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 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.

Specifications

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Model GeForce GTS 450 Radeon HD 4830 1GB
Manufacturer nVidia AMD
Year September 2010 Oct 21, 2008
Code Name GF106 RV770 LE
Memory 512 MB 1024 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 GDDR4
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 data (counted in megabytes per second) that can be transferred across the external memory interface in one second. It's calculated by multiplying the bus width by its memory clock speed. If the card has DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the core speed of the card. 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 get to the maximum fill rate.

Display Prices

Hide Prices

GeForce GTS 450

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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