GeForce GTX 660M Mac Edition vs Radeon HD 6950M

Place in performance ranking	680	921
Place by popularity	not in top-100	not in top-100
Cost-Effectiveness Evaluation	0.50	0.04
Architecture	Terascale 2 (2009−2015)	Kepler (2012−2018)
GPU code name	Blackcomb Pro	GK107
Market segment	Laptop	Desktop
Release date	6 January 2011 (13 years ago)	1 April 2013 (11 years ago)
Current price	$338	$149

Cost-Effectiveness Evaluation

Performance to price ratio. The higher, the better.

HD 6950M has 1150% better value for money than GTX 660M Mac Edition.

Detailed Specifications

General performance parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. These parameters indirectly speak of performance, but for precise assessment you have to consider their benchmark and gaming test results. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores	960	384
Core clock speed	580 MHz	950 MHz
Number of transistors	1,700 million	1,270 million
Manufacturing process technology	40 nm	28 nm
Power consumption (TDP)	50 Watt	50 Watt
Texture fill rate	27.84	30.40
Floating-point performance	1,113.6 gflops	729.6 gflops

Form Factor & Compatibility

Information on Radeon HD 6950M and GeForce GTX 660M Mac Edition compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop video cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility). For notebook video cards it's notebook size, connection slot and bus, if the video card is inserted into a slot instead of being soldered to the notebook motherboard.

Laptop size	large	no data
Interface	MXM-B (3.0)	MXM-B (3.0)
Width	no data	MXM Module
Supplementary power connectors	no data	None

VRAM Capacity and Type

Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.

Memory type	GDDR5	GDDR5
Maximum RAM amount	2 GB	512 MB
Memory bus width	256 Bit	128 Bit
Memory clock speed	900 MHz	5000 MHz
Memory bandwidth	115.2 GB/s	80 GB/s
Shared memory	-	no data

Connectivity and Outputs

Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.

Display Connectors

No outputs

API Compatibility

List of supported graphics and general-purpose computing APIs, including their specific versions.

DirectX	11.2 (11_0)	12 (11_0)
Shader Model	5.0	5.1
OpenGL	4.4	4.6
OpenCL	1.2	1.2
Vulkan	N/A	1.1.126
CUDA	no data	3.0

Gaming performance

Let's see how good the compared graphics cards are for gaming. Particular gaming benchmark results are measured in FPS.

FPS performance in popular games

Full HD
Low Preset

Cyberpunk 2077

6−7
+200%

2−3

−200%

Full HD
Medium Preset

Assassin's Creed Odyssey	6−7 +200%	2−3 −200%
Assassin's Creed Valhalla	1−2	0−1
Battlefield 5	9−10 +200%	3−4 −200%
Call of Duty: Modern Warfare	12−14 +160%	5−6 −160%
Cyberpunk 2077	6−7 +200%	2−3 −200%
Far Cry 5	6−7 +200%	2−3 −200%
Far Cry New Dawn	6−7 +200%	2−3 −200%
Forza Horizon 4	10−11 +150%	4−5 −150%
Hitman 3	7−8 +133%	3−4 −133%
Horizon Zero Dawn	6−7 +200%	2−3 −200%
Red Dead Redemption 2	7−8 +133%	3−4 −133%
Shadow of the Tomb Raider	10−11 +150%	4−5 −150%
Watch Dogs: Legion	3−4 +200%	1−2 −200%

Full HD
High Preset

Assassin's Creed Odyssey	6−7 +200%	2−3 −200%
Assassin's Creed Valhalla	1−2	0−1
Battlefield 5	9−10 +200%	3−4 −200%
Call of Duty: Modern Warfare	12−14 +160%	5−6 −160%
Cyberpunk 2077	6−7 +200%	2−3 −200%
Far Cry 5	6−7 +200%	2−3 −200%
Far Cry New Dawn	6−7 +200%	2−3 −200%
Forza Horizon 4	10−11 +150%	4−5 −150%
Hitman 3	7−8 +133%	3−4 −133%
Horizon Zero Dawn	6−7 +200%	2−3 −200%
Metro Exodus	5−6 +150%	2−3 −150%
Red Dead Redemption 2	7−8 +133%	3−4 −133%
Shadow of the Tomb Raider	10−11 +150%	4−5 −150%
The Witcher 3: Wild Hunt	8−9 +167%	3−4 −167%
Watch Dogs: Legion	3−4 +200%	1−2 −200%

Full HD
Ultra Preset

Assassin's Creed Odyssey	6−7 +200%	2−3 −200%
Assassin's Creed Valhalla	1−2	0−1
Battlefield 5	9−10 +200%	3−4 −200%
Cyberpunk 2077	6−7 +200%	2−3 −200%
Far Cry 5	6−7 +200%	2−3 −200%
Far Cry New Dawn	6−7 +200%	2−3 −200%
Forza Horizon 4	10−11 +150%	4−5 −150%
The Witcher 3: Wild Hunt	8−9 +167%	3−4 −167%
Watch Dogs: Legion	3−4 +200%	1−2 −200%

1440p
High Preset

Call of Duty: Modern Warfare	6−7 +200%	2−3 −200%
Hitman 3	6−7 +200%	2−3 −200%
Horizon Zero Dawn	10−11 +150%	4−5 −150%
Metro Exodus	2−3	0−1
Red Dead Redemption 2	2−3	0−1
Shadow of the Tomb Raider	7−8 +133%	3−4 −133%

1440p
Ultra Preset

Assassin's Creed Odyssey	1−2	0−1
Cyberpunk 2077	2−3	0−1
Far Cry 5	5−6 +150%	2−3 −150%
Far Cry New Dawn	1−2	0−1
Forza Horizon 4	3−4 +200%	1−2 −200%
The Witcher 3: Wild Hunt	3−4 +200%	1−2 −200%

4K
High Preset

Call of Duty: Modern Warfare	3−4 +200%	1−2 −200%
Hitman 3	3−4 +200%	1−2 −200%
Horizon Zero Dawn	7−8 +133%	3−4 −133%
Red Dead Redemption 2	2−3	0−1
Shadow of the Tomb Raider	0−1	0−1

4K
Ultra Preset

Assassin's Creed Odyssey	2−3	0−1
Assassin's Creed Valhalla	1−2	0−1
Cyberpunk 2077	0−1	0−1
Far Cry 5	4−5 +300%	1−2 −300%
Far Cry New Dawn	6−7 +200%	2−3 −200%
Forza Horizon 4	0−1	0−1