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GeForce 9500 GT DDR2 vs Radeon HD 6670 (OEM)

Intro

The GeForce 9500 GT DDR2 features a clock speed of 550 MHz and a DDR2 memory speed of 500 MHz. It also makes use of a 128-bit memory bus, and uses a 65 nm design. It is comprised of 32 SPUs, 16 TAUs, and 8 ROPs.

Compare those specs to the Radeon HD 6670 (OEM), which comes with GPU core speed of 800 MHz, and 512 MB of GDDR5 memory set to run at 1000 MHz through a 128-bit bus. It also is made up of 480 SPUs, 24 TAUs, and 8 Raster Operation Units.

(No game benchmarks for this combination yet.)

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

As far as performance goes, the Radeon HD 6670 (OEM) should theoretically be quite a bit better than the GeForce 9500 GT DDR2 in general. (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) will be quite a bit (more or less 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 running with lots of anti-aliasing is important to you, then the Radeon HD 6670 (OEM) is a better choice, and very much so. (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

Amazon.com

Radeon HD 6670 (OEM)

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 9500 GT DDR2 Radeon HD 6670 (OEM)
Manufacturer nVidia AMD
Year July 2008 February 2011
Code Name G96a Turks
Fab Process 65 nm 40 nm
Bus PCIe x16 2.0, PCI PCIe 2.1 x16
Memory 256 MB 512 MB
Core Speed 550 MHz 800 MHz
Shader Speed 1400 MHz (N/A) MHz
Memory Speed 500 MHz (1000 MHz effective) 1000 MHz (4000 MHz effective)
Unified Shaders 32 480
Texture Mapping Units 16 24
Render Output Units 8 8
Bus Type DDR2 GDDR5
Bus Width 128-bit 128-bit
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 4.1
Power (Max TDP) 50 watts 63 watts
Shader Model 4.0 5.0
Bandwidth 16000 MB/sec 64000 MB/sec
Texel Rate 8800 Mtexels/sec 19200 Mtexels/sec
Pixel Rate 4400 Mpixels/sec 6400 Mpixels/sec

Memory Bandwidth: Bandwidth is the largest amount of data (in units of megabytes per second) that can be transported over the external memory interface within a second. It is worked out 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 card's memory bandwidth, 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 figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number 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 rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

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