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GeForce 9500 GT 512MB GDDR3 vs Radeon HD 5450


The GeForce 9500 GT 512MB GDDR3 makes use of a 55 nm design. nVidia has clocked the core speed at 550 MHz. The GDDR3 RAM runs at a speed of 800 MHz on this card. It features 32 SPUs as well as 16 Texture Address Units and 8 ROPs.

Compare those specifications to the Radeon HD 5450, which uses a 40 nm design. AMD has clocked the core frequency at 650 MHz. The DDR3 memory works at a frequency of 800 MHz on this specific model. It features 80(16x5) SPUs as well as 8 TAUs and 4 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5450 19 Watts
GeForce 9500 GT 512MB GDDR3 50 Watts
Difference: 31 Watts (163%)

Memory Bandwidth

The GeForce 9500 GT 512MB GDDR3, in theory, should perform a lot faster than the Radeon HD 5450 overall. (explain)

GeForce 9500 GT 512MB GDDR3 25600 MB/sec
Radeon HD 5450 12800 MB/sec
Difference: 12800 (100%)

Texel Rate

The GeForce 9500 GT 512MB GDDR3 is a lot (approximately 69%) faster with regards to texture filtering than the Radeon HD 5450. (explain)

GeForce 9500 GT 512MB GDDR3 8800 Mtexels/sec
Radeon HD 5450 5200 Mtexels/sec
Difference: 3600 (69%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce 9500 GT 512MB GDDR3 is the winner, by a large margin. (explain)

GeForce 9500 GT 512MB GDDR3 4400 Mpixels/sec
Radeon HD 5450 2600 Mpixels/sec
Difference: 1800 (69%)

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 9500 GT 512MB GDDR3

Radeon HD 5450

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.


Display Specifications

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Model GeForce 9500 GT 512MB GDDR3 Radeon HD 5450
Manufacturer nVidia AMD
Year July 2008 February 4, 2010
Code Name G96b Cedar PRO
Memory 512 MB 512 MB
Core Speed 550 MHz 650 MHz
Memory Speed 1600 MHz 1600 MHz
Power (Max TDP) 50 watts 19 watts
Bandwidth 25600 MB/sec 12800 MB/sec
Texel Rate 8800 Mtexels/sec 5200 Mtexels/sec
Pixel Rate 4400 Mpixels/sec 2600 Mpixels/sec
Unified Shaders 32 80(16x5)
Texture Mapping Units 16 8
Render Output Units 8 4
Bus Type GDDR3 DDR3
Bus Width 128-bit 64-bit
Fab Process 55 nm 40 nm
Transistors 314 million 292 million
Bus PCIe x16 2.0, PCI PCIe 2.1 x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 3.2

Memory Bandwidth: Memory bandwidth is the max amount of information (measured in MB per second) that can be transferred across the external memory interface in a second. It's calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, 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 can be applied in one second. This figure is worked out by multiplying the total amount of texture units of the card 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 processed in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.


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