GeForce GTX 775M Mac Edition vs Radeon HD 7990

Place in performance ranking	337	700
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	1.68	0.26
Architecture	GCN 1.0 (2012−2020)	Kepler (2012−2018)
GPU code name	Malta	GK104
Market segment	Desktop	Desktop
Release date	24 April 2013 (11 years ago)	8 November 2013 (10 years ago)
Launch price (MSRP)	$999	no data
Current price	$486 (0.5x MSRP)	$149

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

HD 7990 has 546% better value for money than GTX 775M 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	2048	1344
Core clock speed	950 MHz	797 MHz
Boost clock speed	1000 MHz	no data
Number of transistors	4,313 million	3,540 million
Manufacturing process technology	28 nm	28 nm
Power consumption (TDP)	375 Watt	100 Watt
Texture fill rate	128.0	89.26
Floating-point performance	2x 4,096 gflops	2,142 gflops

Form factor & compatibility

Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).

Interface	PCIe 3.0 x16	MXM-B (3.0)
Length	307 mm	no data
Width	2-slot	MXM Module
Supplementary power connectors	2x 8-pin	no data

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	3 GB	2 GB
Memory bus width	384 Bit	256 Bit
Memory clock speed	6000 MHz	5000 MHz
Memory bandwidth	288.0 GB/s	160.0 GB/s

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

1x DVI, 4x mini-DisplayPort

No outputs