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GeForce 8800 GT 512MB vs Radeon HD 5450

Intro

The GeForce 8800 GT 512MB features a GPU core clock speed of 600 MHz, and the 512 MB of GDDR3 RAM runs at 900 MHz through a 256-bit bus. It also is comprised of 112 SPUs, 56 TAUs, and 16 ROPs.

Compare those specifications to the Radeon HD 5450, which features a GPU core clock speed of 650 MHz, and 512 MB of DDR3 memory running at 800 MHz through a 64-bit bus. It also is comprised of 80(16x5) SPUs, 8 Texture Address Units, and 4 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5450 19 Watts
GeForce 8800 GT 512MB 105 Watts
Difference: 86 Watts (453%)

Memory Bandwidth

Theoretically speaking, the GeForce 8800 GT 512MB should be much faster than the Radeon HD 5450 in general. (explain)

GeForce 8800 GT 512MB 57600 MB/sec
Radeon HD 5450 12800 MB/sec
Difference: 44800 (350%)

Texel Rate

The GeForce 8800 GT 512MB should be quite a bit (about 546%) faster with regards to texture filtering than the Radeon HD 5450. (explain)

GeForce 8800 GT 512MB 33600 Mtexels/sec
Radeon HD 5450 5200 Mtexels/sec
Difference: 28400 (546%)

Pixel Rate

If using a high resolution is important to you, then the GeForce 8800 GT 512MB is the winner, by a large margin. (explain)

GeForce 8800 GT 512MB 9600 Mpixels/sec
Radeon HD 5450 2600 Mpixels/sec
Difference: 7000 (269%)

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 8800 GT 512MB

Amazon.com

Check prices at:

Radeon HD 5450

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 8800 GT 512MB Radeon HD 5450
Manufacturer nVidia AMD
Year Oct 2007 February 4, 2010
Code Name G92 Cedar PRO
Memory 512 MB 512 MB
Core Speed 600 MHz 650 MHz
Memory Speed 1800 MHz 1600 MHz
Power (Max TDP) 105 watts 19 watts
Bandwidth 57600 MB/sec 12800 MB/sec
Texel Rate 33600 Mtexels/sec 5200 Mtexels/sec
Pixel Rate 9600 Mpixels/sec 2600 Mpixels/sec
Unified Shaders 112 80(16x5)
Texture Mapping Units 56 8
Render Output Units 16 4
Bus Type GDDR3 DDR3
Bus Width 256-bit 64-bit
Fab Process 65 nm 40 nm
Transistors 754 million 292 million
Bus PCIe x16 2.0 PCIe 2.1 x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 3.2

Memory Bandwidth: Bandwidth is the max amount of data (measured in megabytes per second) that can be moved past the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total texture units by the core clock 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 applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant 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

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GeForce 8800 GT 512MB

Amazon.com

Check prices at:

Radeon HD 5450

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.

Comments

One Response to “GeForce 8800 GT 512MB vs Radeon HD 5450”
Joey says:

I just s*it my pants.

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