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GeForce 9500 GT DDR2 vs Radeon HD 6670 (OEM)


Intro

The GeForce 9500 GT DDR2 makes use of a 65 nm design. nVidia has set the core frequency at 550 MHz. The DDR2 RAM runs at a speed of 500 MHz on this model. It features 32 SPUs along with 16 Texture Address Units and 8 Rasterization Operator Units.

Compare that to the Radeon HD 6670 (OEM), which has clock speeds of 800 MHz on the GPU, and 1000 MHz on the 512 MB of GDDR5 RAM. It features 480 SPUs as well as 24 Texture Address Units and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9500 GT DDR2 50 Watts
Radeon HD 6670 (OEM) 63 Watts
Difference: 13 Watts (26%)

Memory Bandwidth

In theory, the Radeon HD 6670 (OEM) will be 300% quicker than the GeForce 9500 GT DDR2 overall, because of its greater bandwidth. (explain)

Radeon HD 6670 (OEM) 64000 MB/sec
GeForce 9500 GT DDR2 16000 MB/sec
Difference: 48000 (300%)

Texel Rate

The Radeon HD 6670 (OEM) is much (about 118%) more effective at texture filtering than the GeForce 9500 GT DDR2. (explain)

Radeon HD 6670 (OEM) 19200 Mtexels/sec
GeForce 9500 GT DDR2 8800 Mtexels/sec
Difference: 10400 (118%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 6670 (OEM) is superior to the GeForce 9500 GT DDR2, by a large margin. (explain)

Radeon HD 6670 (OEM) 6400 Mpixels/sec
GeForce 9500 GT DDR2 4400 Mpixels/sec
Difference: 2000 (45%)

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 9500 GT DDR2

Radeon HD 6670 (OEM)

Specifications

Display Specifications

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Model GeForce 9500 GT DDR2 Radeon HD 6670 (OEM)
Manufacturer nVidia AMD
Year July 2008 February 2011
Code Name G96a Turks
Memory 256 MB 512 MB
Core Speed 550 MHz 800 MHz
Memory Speed 1000 MHz 4000 MHz
Power (Max TDP) 50 watts 63 watts
Bandwidth 16000 MB/sec 64000 MB/sec
Texel Rate 8800 Mtexels/sec 19200 Mtexels/sec
Pixel Rate 4400 Mpixels/sec 6400 Mpixels/sec
Unified Shaders 32 480
Texture Mapping Units 16 24
Render Output Units 8 8
Bus Type DDR2 GDDR5
Bus Width 128-bit 128-bit
Fab Process 65 nm 40 nm
Transistors 314 million 715 million
Bus PCIe x16 2.0, PCI PCIe 2.1 x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 4.1

Memory Bandwidth: Bandwidth is the maximum amount of information (measured in MB per second) that can be moved past the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

GeForce 9500 GT DDR2

Radeon HD 6670 (OEM)

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