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GeForce GTX 465 vs Radeon HD 4870 512MB

Intro

The GeForce GTX 465 features core clock speeds of 607 MHz on the GPU, and 802 MHz on the 1024 MB of GDDR5 memory. It features 352 SPUs along with 44 TAUs and 32 ROPs.

Compare that to the Radeon HD 4870 512MB, which has a clock speed of 750 MHz and a GDDR5 memory frequency of 900 MHz. It also uses a 256-bit memory bus, and makes use of a 55 nm design. It is comprised of 800(160x5) SPUs, 40 Texture Address Units, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4870 512MB 150 Watts
GeForce GTX 465 200 Watts
Difference: 50 Watts (33%)

Memory Bandwidth

As far as performance goes, the Radeon HD 4870 512MB should in theory be a small bit superior to the GeForce GTX 465 in general. (explain)

Radeon HD 4870 512MB 115200 MB/sec
GeForce GTX 465 102592 MB/sec
Difference: 12608 (12%)

Texel Rate

The Radeon HD 4870 512MB is a little bit (about 12%) faster with regards to texture filtering than the GeForce GTX 465. (explain)

Radeon HD 4870 512MB 30000 Mtexels/sec
GeForce GTX 465 26708 Mtexels/sec
Difference: 3292 (12%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 465 is the winner, by a large margin. (explain)

GeForce GTX 465 19424 Mpixels/sec
Radeon HD 4870 512MB 12000 Mpixels/sec
Difference: 7424 (62%)

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 GTX 465

Amazon.com

Check prices at:

Radeon HD 4870 512MB

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 GTX 465 Radeon HD 4870 512MB
Manufacturer nVidia AMD
Year May 2010 Jun 25, 2008
Code Name GF100 RV770 XT
Memory 1024 MB 512 MB
Core Speed 607 MHz 750 MHz
Memory Speed 3208 MHz 3600 MHz
Power (Max TDP) 200 watts 150 watts
Bandwidth 102592 MB/sec 115200 MB/sec
Texel Rate 26708 Mtexels/sec 30000 Mtexels/sec
Pixel Rate 19424 Mpixels/sec 12000 Mpixels/sec
Unified Shaders 352 800(160x5)
Texture Mapping Units 44 40
Render Output Units 32 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 40 nm 55 nm
Transistors 3000 million 956 million
Bus PCIe x16 PCIe 2.0 x16
DirectX Version DirectX 11 DirectX 10.1
OpenGL Version OpenGL 4.1 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the maximum amount of information (counted in megabytes per second) that can be transferred across the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, 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 texture map elements (texels) that are applied per second. This number is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the graphics card will be at 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 video card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

GeForce GTX 465

Amazon.com

Check prices at:

Radeon HD 4870 512MB

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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