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GeForce 8800 GT 1GB vs Radeon HD 4770

Intro

The GeForce 8800 GT 1GB has a GPU clock speed of 600 MHz, and the 1024 MB of GDDR3 RAM is set to run at 900 MHz through a 256-bit bus. It also features 112 Stream Processors, 56 TAUs, and 16 Raster Operation Units.

Compare all of that to the Radeon HD 4770, which uses a 40 nm design. AMD has clocked the core speed at 750 MHz. The GDDR5 RAM is set to run at a speed of 800 MHz on this particular model. It features 640(128x5) SPUs along with 32 Texture Address Units and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4770 80 Watts
GeForce 8800 GT 1GB 105 Watts
Difference: 25 Watts (31%)

Memory Bandwidth

Theoretically, the GeForce 8800 GT 1GB should be just a bit faster than the Radeon HD 4770 in general. (explain)

GeForce 8800 GT 1GB 57600 MB/sec
Radeon HD 4770 51200 MB/sec
Difference: 6400 (13%)

Texel Rate

The GeForce 8800 GT 1GB is much (approximately 40%) more effective at AF than the Radeon HD 4770. (explain)

GeForce 8800 GT 1GB 33600 Mtexels/sec
Radeon HD 4770 24000 Mtexels/sec
Difference: 9600 (40%)

Pixel Rate

The Radeon HD 4770 is much (approximately 25%) better at anti-aliasing than the GeForce 8800 GT 1GB, and should be capable of handling higher resolutions more effectively. (explain)

Radeon HD 4770 12000 Mpixels/sec
GeForce 8800 GT 1GB 9600 Mpixels/sec
Difference: 2400 (25%)

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 8800 GT 1GB

Amazon.com

Check prices at:

Radeon HD 4770

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 8800 GT 1GB Radeon HD 4770
Manufacturer nVidia AMD
Year Dec 2007 Apr 28, 2009
Code Name G92 RV740
Memory 1024 MB 512 MB
Core Speed 600 MHz 750 MHz
Memory Speed 1800 MHz 3200 MHz
Power (Max TDP) 105 watts 80 watts
Bandwidth 57600 MB/sec 51200 MB/sec
Texel Rate 33600 Mtexels/sec 24000 Mtexels/sec
Pixel Rate 9600 Mpixels/sec 12000 Mpixels/sec
Unified Shaders 112 640(128x5)
Texture Mapping Units 56 32
Render Output Units 16 16
Bus Type GDDR3 GDDR5
Bus Width 256-bit 128-bit
Fab Process 65 nm 40 nm
Transistors 754 million 826 million
Bus PCIe x16 2.0 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 max amount of information (counted in MB per second) that can be moved across the external memory interface in a second. It is worked out by multiplying the bus width by its memory clock speed. If it uses DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the 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 are processed per second. This number is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce 8800 GT 1GB

Amazon.com

Check prices at:

Radeon HD 4770

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.

Comments

One Response to “GeForce 8800 GT 1GB vs Radeon HD 4770”
hangisi daha iyi zotac 8800 gts mi ati hd 4770 mi says:

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