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GeForce 9500 GT DDR2 vs Radeon HD 7770


Intro

The GeForce 9500 GT DDR2 features a GPU core clock speed of 550 MHz, and the 256 MB of DDR2 RAM runs at 500 MHz through a 128-bit bus. It also is comprised of 32 Stream Processors, 16 TAUs, and 8 Raster Operation Units.

Compare those specs to the Radeon HD 7770, which comes with a core clock speed of 1000 MHz and a GDDR5 memory speed of 1125 MHz. It also makes use of a 128-bit bus, and makes use of a 28 nm design. It features 640 SPUs, 40 Texture Address Units, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9500 GT DDR2 50 Watts
Radeon HD 7770 80 Watts
Difference: 30 Watts (60%)

Memory Bandwidth

As far as performance goes, the Radeon HD 7770 should theoretically be much better than the GeForce 9500 GT DDR2 overall. (explain)

Radeon HD 7770 72000 MB/sec
GeForce 9500 GT DDR2 16000 MB/sec
Difference: 56000 (350%)

Texel Rate

The Radeon HD 7770 is quite a bit (approximately 355%) better at anisotropic filtering than the GeForce 9500 GT DDR2. (explain)

Radeon HD 7770 40000 Mtexels/sec
GeForce 9500 GT DDR2 8800 Mtexels/sec
Difference: 31200 (355%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon HD 7770 is the winner, by a large margin. (explain)

Radeon HD 7770 16000 Mpixels/sec
GeForce 9500 GT DDR2 4400 Mpixels/sec
Difference: 11600 (264%)

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 DDR2

Amazon.com

Radeon HD 7770

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

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Model GeForce 9500 GT DDR2 Radeon HD 7770
Manufacturer nVidia AMD
Year July 2008 February 2012
Code Name G96a Cape Verde XT
Memory 256 MB 1024 MB
Core Speed 550 MHz 1000 MHz
Memory Speed 1000 MHz 4500 MHz
Power (Max TDP) 50 watts 80 watts
Bandwidth 16000 MB/sec 72000 MB/sec
Texel Rate 8800 Mtexels/sec 40000 Mtexels/sec
Pixel Rate 4400 Mpixels/sec 16000 Mpixels/sec
Unified Shaders 32 640
Texture Mapping Units 16 40
Render Output Units 8 16
Bus Type DDR2 GDDR5
Bus Width 128-bit 128-bit
Fab Process 65 nm 28 nm
Transistors 314 million 1500 million
Bus PCIe x16 2.0, PCI PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 11.1
OpenGL Version OpenGL 3.0 OpenGL 4.2

Memory Bandwidth: Memory bandwidth is the maximum amount of information (counted in megabytes per second) that can be transported over the external memory interface in one second. The number is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the 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 amount of texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends 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.

Display Prices

Hide Prices

GeForce 9500 GT DDR2

Amazon.com

Radeon HD 7770

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.

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