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GeForce 8800 GT 1GB vs Radeon HD 4770

Intro

The GeForce 8800 GT 1GB makes use of a 65 nm design. nVidia has set the core frequency at 600 MHz. The GDDR3 RAM is set to run at a speed of 900 MHz on this card. It features 112 SPUs along with 56 Texture Address Units and 16 ROPs.

Compare that to the Radeon HD 4770, which features core speeds of 750 MHz on the GPU, and 800 MHz on the 512 MB of GDDR5 RAM. It features 640(128x5) SPUs as well as 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 a little 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 should be a lot (more or less 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 will be a lot (approximately 25%) more effective at FSAA than the GeForce 8800 GT 1GB, and capable of handling higher screen resolutions better. (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 maximum amount of information (measured in MB per second) that can be transferred over the external memory interface in one second. It's calculated by multiplying the card's interface width by its memory speed. In the case of DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max 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:

[...] kere GeForce 8800 GT 1GB vs Radeon HD 4770 – Performance Comparison Benchmarks @ Hardware Compare Burdan [...]

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