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GeForce GTX 965M vs Radeon HD 6770

Intro

The GeForce GTX 965M features core speeds of 944 MHz on the GPU, and 1000 MHz on the 2048 MB of GDDR5 memory. It features 1024 SPUs along with 64 Texture Address Units and 32 Rasterization Operator Units.

Compare all of that to the Radeon HD 6770, which features core clock speeds of 900 MHz on the GPU, and 1050 MHz on the 512 MB of GDDR5 memory. It features 800 SPUs as well as 40 TAUs and 16 ROPs.

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

GeForce GTX 965M		5650 points
Radeon HD 6770		1520 points
	Difference: 4130 (272%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 965M		60 Watts
Radeon HD 6770		108 Watts
	Difference: 48 Watts (80%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6770 should perform a little bit faster than the GeForce GTX 965M in general. (explain)

Radeon HD 6770		67200 MB/sec
GeForce GTX 965M		64000 MB/sec
	Difference: 3200 (5%)

Texel Rate

The GeForce GTX 965M is a lot (about 68%) more effective at texture filtering than the Radeon HD 6770. (explain)

GeForce GTX 965M		60416 Mtexels/sec
Radeon HD 6770		36000 Mtexels/sec
	Difference: 24416 (68%)

Pixel Rate

The GeForce GTX 965M will be a lot (more or less 110%) faster with regards to AA than the Radeon HD 6770, and will be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 965M		30208 Mpixels/sec
Radeon HD 6770		14400 Mpixels/sec
	Difference: 15808 (110%)

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

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Radeon HD 6770

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Specifications

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Model	GeForce GTX 965M	Radeon HD 6770
Manufacturer	nVidia	AMD
Year	January 5 2015	January 2011
Code Name	GM204	Juniper XT
Memory	2048 MB	512 MB
Core Speed	944 MHz	900 MHz
Memory Speed	4000 MHz	4200 MHz
Power (Max TDP)	60 watts	108 watts
Bandwidth	64000 MB/sec	67200 MB/sec
Texel Rate	60416 Mtexels/sec	36000 Mtexels/sec
Pixel Rate	30208 Mpixels/sec	14400 Mpixels/sec
Unified Shaders	1024	800
Texture Mapping Units	64	40
Render Output Units	32	16
Bus Type	GDDR5	GDDR5
Bus Width	128-bit	128-bit
Fab Process	28 nm	40 nm
Transistors	(Unknown) million	1040 million
Bus	PCIe 3.0 x16	PCIe x16
DirectX Version	DirectX 12	DirectX 11
OpenGL Version	OpenGL 4.5	OpenGL 4.1

Memory Bandwidth: Bandwidth is the max amount of data (measured in MB per second) that can be transferred across the external memory interface within a second. It's calculated by multiplying the interface width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

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