Join Us On Facebook

Compare any two graphics cards:
VS

GeForce 8600 GT 256MB DDR2 vs Radeon HD 5450

Intro

The GeForce 8600 GT 256MB DDR2 features a GPU core speed of 540 MHz, and the 256 MB of DDR2 RAM runs at 400 MHz through a 128-bit bus. It also features 32 Stream Processors, 16 Texture Address Units, and 8 ROPs.

Compare those specs to the Radeon HD 5450, which has a GPU core clock speed of 650 MHz, and 512 MB of DDR3 memory set to run at 800 MHz through a 64-bit bus. It also is comprised of 80(16x5) SPUs, 8 TAUs, and 4 ROPs.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5450 19 Watts
GeForce 8600 GT 256MB DDR2 47 Watts
Difference: 28 Watts (147%)

Memory Bandwidth

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

Texel Rate

The GeForce 8600 GT 256MB DDR2 should be a lot (about 66%) faster with regards to AF than the Radeon HD 5450. (explain)

GeForce 8600 GT 256MB DDR2 8640 Mtexels/sec
Radeon HD 5450 5200 Mtexels/sec
Difference: 3440 (66%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce 8600 GT 256MB DDR2 is the winner, by a large margin. (explain)

GeForce 8600 GT 256MB 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

GeForce 8600 GT 256MB 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

Model GeForce 8600 GT 256MB DDR2 Radeon HD 5450
Manufacturer nVidia AMD
Year April 2007 February 4, 2010
Code Name G84 Cedar PRO
Fab Process 80 nm 40 nm
Bus PCIe x16 PCIe 2.1 x16
Memory 256 MB 512 MB
Core Speed 540 MHz 650 MHz
Shader Speed 1180 MHz (N/A) MHz
Memory Speed 400 MHz (800 MHz effective) 800 MHz (1600 MHz effective)
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
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 3.2
Power (Max TDP) 47 watts 19 watts
Shader Model 4.0 5.0
Bandwidth 12800 MB/sec 12800 MB/sec
Texel Rate 8640 Mtexels/sec 5200 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 2600 Mpixels/sec

Memory Bandwidth: Bandwidth is the maximum amount of information (measured in megabytes per second) that can be moved past the external memory interface in a second. It is worked out by multiplying the interface width by the speed of its memory. If the card has DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Comments

Be the first to leave a comment!

Your email address will not be published.


You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>

Spam Protection by WP-SpamFree