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GeForce GTX 465 vs Radeon HD 4870 1GB

Intro

The GeForce GTX 465 uses a 40 nm design. nVidia has set the core speed at 607 MHz. The GDDR5 RAM is set to run at a frequency of 802 MHz on this specific model. It features 352 SPUs along with 44 TAUs and 32 Rasterization Operator Units.

Compare all that to the Radeon HD 4870 1GB, which makes use of a 55 nm design. AMD has clocked the core frequency at 750 MHz. The GDDR5 RAM is set to run at a speed of 900 MHz on this specific model. It features 800(160x5) SPUs along with 40 TAUs and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4870 1GB 150 Watts
GeForce GTX 465 200 Watts
Difference: 50 Watts (33%)

Memory Bandwidth

In theory, the Radeon HD 4870 1GB should perform just a bit faster than the GeForce GTX 465 overall. (explain)

Radeon HD 4870 1GB 115200 MB/sec
GeForce GTX 465 102592 MB/sec
Difference: 12608 (12%)

Texel Rate

The Radeon HD 4870 1GB will be a little bit (approximately 12%) better at texture filtering than the GeForce GTX 465. (explain)

Radeon HD 4870 1GB 30000 Mtexels/sec
GeForce GTX 465 26708 Mtexels/sec
Difference: 3292 (12%)

Pixel Rate

The GeForce GTX 465 should be quite a bit (more or less 62%) faster with regards to AA than the Radeon HD 4870 1GB, and will be able to handle higher screen resolutions better. (explain)

GeForce GTX 465 19424 Mpixels/sec
Radeon HD 4870 1GB 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 1GB

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 1GB
Manufacturer nVidia AMD
Year May 2010 Jun 25, 2008
Code Name GF100 RV770 XT
Memory 1024 MB 1024 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 max amount of information (measured in megabytes per second) that can be moved over the external memory interface in a second. The number is worked out by multiplying the bus width by its memory speed. If the card has DDR type memory, it must be multiplied by 2 again. If 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 high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the card's clock speed. 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 rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the 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 1GB

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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