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GeForce 8600 GT 512MB DDR2 vs Radeon HD 5450

Intro

The GeForce 8600 GT 512MB DDR2 comes with a GPU core clock speed of 540 MHz, and the 512 MB of DDR2 memory is set to run at 400 MHz through a 128-bit bus. It also features 32 SPUs, 16 TAUs, and 8 Raster Operation Units.

Compare those specs to the Radeon HD 5450, which makes use of a 40 nm design. AMD has clocked the core frequency at 650 MHz. The DDR3 RAM works at a speed of 800 MHz on this particular card. It features 80(16x5) SPUs as well as 8 TAUs and 4 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5450 19 Watts
GeForce 8600 GT 512MB DDR2 47 Watts
Difference: 28 Watts (147%)

Memory Bandwidth

Both cards have the exact same memory bandwidth, so theoretically they should perform exactly the same. (explain)

Texel Rate

The GeForce 8600 GT 512MB DDR2 should be quite a bit (more or less 66%) more effective at anisotropic filtering than the Radeon HD 5450. (explain)

GeForce 8600 GT 512MB DDR2 8640 Mtexels/sec
Radeon HD 5450 5200 Mtexels/sec
Difference: 3440 (66%)

Pixel Rate

The GeForce 8600 GT 512MB DDR2 will be quite a bit (approximately 66%) faster with regards to anti-aliasing than the Radeon HD 5450, and capable of handling higher resolutions while still performing well. (explain)

GeForce 8600 GT 512MB DDR2 4320 Mpixels/sec
Radeon HD 5450 2600 Mpixels/sec
Difference: 1720 (66%)

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 8600 GT 512MB DDR2

Amazon.com

Radeon HD 5450

Amazon.com

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 8600 GT 512MB DDR2 Radeon HD 5450
Manufacturer nVidia AMD
Year April 2007 February 4, 2010
Code Name G84 Cedar PRO
Memory 512 MB 512 MB
Core Speed 540 MHz 650 MHz
Memory Speed 800 MHz 1600 MHz
Power (Max TDP) 47 watts 19 watts
Bandwidth 12800 MB/sec 12800 MB/sec
Texel Rate 8640 Mtexels/sec 5200 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 2600 Mpixels/sec
Unified Shaders 32 80(16x5)
Texture Mapping Units 16 8
Render Output Units 8 4
Bus Type DDR2 DDR3
Bus Width 128-bit 64-bit
Fab Process 80 nm 40 nm
Transistors 289 million 292 million
Bus PCIe x16 PCIe 2.1 x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 3.2

Memory Bandwidth: Bandwidth is the maximum amount of information (in units of megabytes per second) that can be moved past the external memory interface in a second. The number is worked out by multiplying the interface width by its memory speed. If it uses DDR memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher 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 number of texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Comments

2 Responses to “GeForce 8600 GT 512MB DDR2 vs Radeon HD 5450”
Would I be able to run on high? - Page 2 - Project Reality Forums says:

[...] Re: Would I be able to run on high? In my opinion 8600 is better GeForce 8600 GT 512MB DDR2 vs Radeon HD 5450 – Performance Comparison Benchmarks @ Hardware Co... [...]

Compare 8600gt | Golves says:

[...] GeForce 8600 GT 512MB DDR2 vs Radeon HD 5450 …Mar 18, 2011 … Model, GeForce 8600 GT 512MB DDR2, Radeon HD 5450. Manufacturer, nVidia, ATi. Year, April 2007, February 4, 2010. Code Name, G84 … [...]

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