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GeForce 8600 GT 512MB DDR2 vs Radeon HD 5450

Intro

The GeForce 8600 GT 512MB DDR2 makes use of a 80 nm design. nVidia has clocked the core frequency at 540 MHz. The DDR2 RAM runs at a frequency of 400 MHz on this particular model. It features 32 SPUs as well as 16 Texture Address Units and 8 Rasterization Operator Units.

Compare all of that to the Radeon HD 5450, which has clock speeds of 650 MHz on the GPU, and 800 MHz on the 512 MB of DDR3 RAM. It features 80(16x5) SPUs along with 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 in theory they should perform the same. (explain)

Texel Rate

The GeForce 8600 GT 512MB DDR2 will be much (about 66%) more effective at texture 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 should be much (more or less 66%) faster with regards to FSAA than the Radeon HD 5450, and capable of handling higher screen 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 largest amount of data (in units of MB per second) that can be transported over the external memory interface in one second. It's calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. 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 number of texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, most notably 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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