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GeForce GTX 965M vs Radeon HD 4850 1GB

Intro

The GeForce GTX 965M features a clock speed of 944 MHz and a GDDR5 memory frequency of 1000 MHz. It also makes use of a 128-bit bus, and uses a 28 nm design. It is made up of 1024 SPUs, 64 Texture Address Units, and 32 ROPs.

Compare all that to the Radeon HD 4850 1GB, which comes with core clock speeds of 625 MHz on the GPU, and 993 MHz on the 1024 MB of GDDR4 RAM. It features 800(160x5) SPUs as well as 40 Texture Address Units and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 965M 60 Watts
Radeon HD 4850 1GB 110 Watts
Difference: 50 Watts (83%)

Memory Bandwidth

Performance-wise, the GeForce GTX 965M should theoretically be a little bit superior to the Radeon HD 4850 1GB overall. (explain)

GeForce GTX 965M 64000 MB/sec
Radeon HD 4850 1GB 63552 MB/sec
Difference: 448 (1%)

Texel Rate

The GeForce GTX 965M should be quite a bit (approximately 142%) faster with regards to AF than the Radeon HD 4850 1GB. (explain)

GeForce GTX 965M 60416 Mtexels/sec
Radeon HD 4850 1GB 25000 Mtexels/sec
Difference: 35416 (142%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 965M is the winner, and very much so. (explain)

GeForce GTX 965M 30208 Mpixels/sec
Radeon HD 4850 1GB 10000 Mpixels/sec
Difference: 20208 (202%)

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 965M

Amazon.com

Check prices at:

Radeon HD 4850 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 965M Radeon HD 4850 1GB
Manufacturer nVidia AMD
Year January 5 2015 Jun 25, 2008
Code Name GM204 RV770 PRO
Memory 2048 MB 1024 MB
Core Speed 944 MHz 625 MHz
Memory Speed 4000 MHz 1986 MHz
Power (Max TDP) 60 watts 110 watts
Bandwidth 64000 MB/sec 63552 MB/sec
Texel Rate 60416 Mtexels/sec 25000 Mtexels/sec
Pixel Rate 30208 Mpixels/sec 10000 Mpixels/sec
Unified Shaders 1024 800(160x5)
Texture Mapping Units 64 40
Render Output Units 32 16
Bus Type GDDR5 GDDR4
Bus Width 128-bit 256-bit
Fab Process 28 nm 55 nm
Transistors (Unknown) million 956 million
Bus PCIe 3.0 x16 PCIe 2.0 x16
DirectX Version DirectX 12 DirectX 10.1
OpenGL Version OpenGL 4.5 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the largest amount of information (measured in MB per second) that can be moved across the external memory interface in one second. The number is calculated by multiplying the interface width by the speed of its memory. If the card has DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the video 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 most pixels that the graphics chip can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

GeForce GTX 965M

Amazon.com

Check prices at:

Radeon HD 4850 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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