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GeForce 9500 GT 1GB GDDR3 vs Radeon HD 3690/3830

Intro

The GeForce 9500 GT 1GB GDDR3 comes with a GPU clock speed of 550 MHz, and the 1024 MB of GDDR3 memory runs at 800 MHz through a 128-bit bus. It also is made up of 32 SPUs, 16 TAUs, and 8 ROPs.

Compare all of that to the Radeon HD 3690/3830, which has a clock speed of 668 MHz and a GDDR3 memory speed of 828 MHz. It also uses a 128-bit bus, and makes use of a 55 nm design. It is made up of 320(64x5) SPUs, 16 TAUs, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9500 GT 1GB GDDR3 50 Watts
Radeon HD 3690/3830 75 Watts
Difference: 25 Watts (50%)

Memory Bandwidth

The Radeon HD 3690/3830, in theory, should be just a bit faster than the GeForce 9500 GT 1GB GDDR3 overall. (explain)

Radeon HD 3690/3830 26496 MB/sec
GeForce 9500 GT 1GB GDDR3 25600 MB/sec
Difference: 896 (4%)

Texel Rate

The Radeon HD 3690/3830 is much (more or less 21%) better at texture filtering than the GeForce 9500 GT 1GB GDDR3. (explain)

Radeon HD 3690/3830 10688 Mtexels/sec
GeForce 9500 GT 1GB GDDR3 8800 Mtexels/sec
Difference: 1888 (21%)

Pixel Rate

The Radeon HD 3690/3830 should be quite a bit (approximately 143%) better at AA than the GeForce 9500 GT 1GB GDDR3, and capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon HD 3690/3830 10688 Mpixels/sec
GeForce 9500 GT 1GB GDDR3 4400 Mpixels/sec
Difference: 6288 (143%)

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 1GB GDDR3

Amazon.com

Check prices at:

Radeon HD 3690/3830

Amazon.com

Check prices at:

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

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Model GeForce 9500 GT 1GB GDDR3 Radeon HD 3690/3830
Manufacturer nVidia AMD
Year July 2008 2008
Code Name G96b RV670 PRO
Memory 1024 MB 256 MB
Core Speed 550 MHz 668 MHz
Memory Speed 1600 MHz 1656 MHz
Power (Max TDP) 50 watts 75 watts
Bandwidth 25600 MB/sec 26496 MB/sec
Texel Rate 8800 Mtexels/sec 10688 Mtexels/sec
Pixel Rate 4400 Mpixels/sec 10688 Mpixels/sec
Unified Shaders 32 320(64x5)
Texture Mapping Units 16 16
Render Output Units 8 16
Bus Type GDDR3 GDDR3
Bus Width 128-bit 128-bit
Fab Process 55 nm 55 nm
Transistors 314 million (Unknown) million
Bus PCIe x16 2.0, PCI PCIe 2.0 x16
DirectX Version DirectX 10 DirectX 10.1
OpenGL Version OpenGL 3.0 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the largest amount of data (in units of MB per second) that can be moved over the external memory interface in one second. It is calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce 9500 GT 1GB GDDR3

Amazon.com

Check prices at:

Radeon HD 3690/3830

Amazon.com

Check prices at:

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.

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