Radeon HD 7990 vs Radeon R9 M390X

When choosing between Radeon HD 7990 and Radeon R9 M390X, it is worth examining the specifications of the models in detail. Do they meet the recommended requirements of modern games and software? Storage capacity, form factor, TDP, available ports, warranty and manufacturer support are all important. For example, the size of a PC case can limit the maximum thickness and length of the card. Often, instead of the factory overclocked card and RGB backlight, it is better to choose a reference model with a more efficient GPU. And make sure that your current power supply unit has the correct connection pins (using adapters is not recommended). This GPUs compare tool is meant to help you to choose the best graphics card for your build. Let's find out the difference between Radeon HD 7990 and Radeon R9 M390X.

Radeon HD 7990 Check Price

Radeon R9 M390X Check Price

Radeon R9 M390X is a Laptop Graphics Card

Note: Radeon R9 M390X is only used in laptop graphics. It has lower GPU clock speed compared to the desktop variant, which results in lower power consumption, but also 10-30% lower gaming performance. Check available laptop models with Radeon R9 M390X here:

Radeon R9 M390X Laptops

Main Specs

	Radeon HD 7990	Radeon R9 M390X
Power consumption (TDP)	375 Watt	100 Watt
Interface	PCIe 3.0 x16	PCIe 3.0 x16
Supplementary power connectors	2x 8-pin	None
Memory type	GDDR5	GDDR5
Maximum RAM amount	3 GB	4 GB
Display Connectors	1x DVI, 4x mini-DisplayPort	No outputs
	Check Price	Check Price

Radeon HD 7990 has 275% more power consumption, than Radeon R9 M390X.
Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
Radeon R9 M390X has 1 GB more memory, than Radeon HD 7990.
Radeon HD 7990 is used in Desktops, and Radeon R9 M390X - in Laptops.
Radeon HD 7990 is build with GCN 1.0 architecture, and Radeon R9 M390X - with GCN 3.
Core clock speed of Radeon HD 7990 is 227 MHz higher, than Radeon R9 M390X.
Radeon HD 7990 and Radeon R9 M390X are manufactured by 28 nm process technology.

Game benchmarks


high / 1080p	35−40	21−24
ultra / 1080p	21−24	12−14
QHD / 1440p	16−18	8−9
4K / 2160p	10−11	5−6
low / 720p	60−65	40−45
medium / 1080p	40−45	27−30
The average gaming FPS of Radeon HD 7990 in Assassin's Creed Odyssey is 60% more, than Radeon R9 M390X.
high / 1080p	55−60	35−40
ultra / 1080p	45−50	30−35
QHD / 1440p	35−40	14−16
4K / 2160p	18−20	9−10
low / 720p	100−110	70−75
medium / 1080p	60−65	40−45
The average gaming FPS of Radeon HD 7990 in Battlefield 5 is 58% more, than Radeon R9 M390X.
low / 768p	50−55	50−55
QHD / 1440p	0−1	0−1
Radeon HD 7990 and Radeon R9 M390X have the same average FPS in Call of Duty: Warzone.
low / 768p	250−260	230−240
medium / 768p	220−230	210−220
ultra / 1080p	180−190	120−130
QHD / 1440p	110−120	100−110
4K / 2160p	70−75	55−60
high / 768p	210−220	170−180
The average gaming FPS of Radeon HD 7990 in Counter-Strike: Global Offensive is 16% more, than Radeon R9 M390X.
low / 768p	60−65	60−65
ultra / 1080p	−	55−60
medium / 1080p	55−60	55−60
Radeon HD 7990 and Radeon R9 M390X have the same average FPS in Cyberpunk 2077.
low / 768p	120−130	120−130
medium / 768p	110−120	110−120
ultra / 1080p	100−110	85−90
The average gaming FPS of Radeon HD 7990 in Dota 2 is 5% more, than Radeon R9 M390X.
high / 1080p	45−50	27−30
ultra / 1080p	40−45	24−27
QHD / 1440p	27−30	20−22
4K / 2160p	14−16	9−10
low / 720p	80−85	55−60
medium / 1080p	45−50	30−33
The average gaming FPS of Radeon HD 7990 in Far Cry 5 is 53% more, than Radeon R9 M390X.
high / 1080p	60−65	35−40
ultra / 1080p	45−50	27−30
QHD / 1440p	27−30	16−18
4K / 2160p	27−30	−
low / 720p	180−190	130−140
medium / 1080p	110−120	75−80
The average gaming FPS of Radeon HD 7990 in Fortnite is 47% more, than Radeon R9 M390X.
high / 1080p	60−65	35−40
ultra / 1080p	45−50	27−30
QHD / 1440p	30−35	16−18
4K / 2160p	24−27	14−16
low / 720p	100−110	75−80
medium / 1080p	65−70	40−45
The average gaming FPS of Radeon HD 7990 in Forza Horizon 4 is 55% more, than Radeon R9 M390X.
low / 768p	140−150	110−120
medium / 768p	120−130	95−100
high / 1080p	70−75	45−50
ultra / 1080p	30−35	18−20
QHD / 1440p	21−24	9−10
The average gaming FPS of Radeon HD 7990 in Grand Theft Auto V is 38% more, than Radeon R9 M390X.
high / 1080p	24−27	14−16
ultra / 1080p	20−22	10−12
QHD / 1440p	16−18	10−12
4K / 2160p	8−9	3−4
low / 720p	65−70	40−45
medium / 1080p	30−35	20−22
The average gaming FPS of Radeon HD 7990 in Metro Exodus is 64% more, than Radeon R9 M390X.
low / 768p	130−140	120−130
medium / 1080p	120−130	110−120
The average gaming FPS of Radeon HD 7990 in Minecraft is 8% more, than Radeon R9 M390X.
ultra / 1080p	14−16	14−16
low / 720p	100−110	75−80
medium / 1080p	18−20	18−20
The average gaming FPS of Radeon HD 7990 in PLAYERUNKNOWN'S BATTLEGROUNDS is 24% more, than Radeon R9 M390X.
high / 1080p	24−27	16−18
ultra / 1080p	16−18	10−12
QHD / 1440p	10−11	3−4
4K / 2160p	7−8	2−3
low / 720p	65−70	40−45
medium / 1080p	35−40	21−24
The average gaming FPS of Radeon HD 7990 in Red Dead Redemption 2 is 68% more, than Radeon R9 M390X.
low / 768p	130−140	80−85
medium / 768p	85−90	50−55
high / 1080p	45−50	27−30
ultra / 1080p	24−27	16−18
4K / 2160p	16−18	9−10
The average gaming FPS of Radeon HD 7990 in The Witcher 3: Wild Hunt is 63% more, than Radeon R9 M390X.
low / 768p	90−95	90−95
medium / 768p	60−65	60−65
ultra / 1080p	50−55	40−45
high / 768p	60−65	55−60
The average gaming FPS of Radeon HD 7990 in World of Tanks is 6% more, than Radeon R9 M390X.

Full Specs

	Radeon HD 7990	Radeon R9 M390X
Architecture	GCN 1.0	GCN 3
Code name	Malta	Amethyst (XT) / Tonga
Type	Desktop	Laptop
Release date	24 April 2013	9 June 2015
Pipelines	2048	2048
Core clock speed	950 MHz	723 MHz
Boost Clock	1000 MHz
Transistor count	4,313 million	5,000 million
Manufacturing process technology	28 nm	28 nm
Texture fill rate	128.0	92.54
Floating-point performance	2x 4,096 gflops	2,961 gflops
Length	307 mm
Memory bus width	384 Bit	256 Bit
Memory clock speed	6000 MHz
Memory bandwidth	288.0 GB/s	160.0 GB/s
Shared memory		-
DirectX	12 (11_1)
Shader Model	5.1	6.3
OpenGL	4.6	4.4
OpenCL	1.2	Not Listed
Vulkan	1.2.131	+
FreeSync		+
Bus support		PCIe 3.0
Bitcoin / BTC (SHA256)	459 Mh/s
Laptop size		large
Eyefinity		+
HD3D		+
PowerTune		+
DualGraphics		+
ZeroCore		+
Switchable graphics		+
Mantle		+
Ethereum / ETH (DaggerHashimoto)	44 Mh/s
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Radeon HD 7990 vs Radeon R9 M390X

Radeon R9 M390X is a Laptop Graphics Card

Main Specs

Game benchmarks

Full Specs

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