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GeForce 9500 GT DDR2 vs Radeon HD 6670 (OEM)

Intro

The GeForce 9500 GT DDR2 uses a 65 nm design. nVidia has set the core speed at 550 MHz. The DDR2 memory runs at a frequency of 500 MHz on this particular card. It features 32 SPUs as well as 16 Texture Address Units and 8 Rasterization Operator Units.

Compare those specifications 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 Stream Processors, 24 Texture Address Units, and 8 ROPs.

(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

Theoretically speaking, the Radeon HD 6670 (OEM) should perform much faster 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) should be quite a bit (about 118%) more effective at anisotropic 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

The Radeon HD 6670 (OEM) should be quite a bit (about 45%) faster with regards to AA than the GeForce 9500 GT DDR2, and should be able to handle higher screen resolutions without slowing down too much. (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

Please note that the price comparisons are based on search keywords, and might not be the exact same card listed on this page. We have no control over the accuracy of their search results.

GeForce 9500 GT DDR2

Amazon.com

Other US-based stores

Radeon HD 6670 (OEM)

Amazon.com

Other US-based stores

Specifications

Model GeForce 9500 GT DDR2 Radeon HD 6670 (OEM)
Manufacturer nVidia ATi
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: Memory bandwidth is the max amount of data (counted in megabytes per second) that can be transferred across the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better 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 per second. This number is worked out by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units 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 output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.

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