Radeon HD 6990 vs Radeon R7 M340

If you are going to buy a new graphics card and are choosing between Radeon HD 6990 and Radeon R7 M340, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the Radeon HD 6990 stacks up against Radeon R7 M340, check out specs charts below.

Radeon HD 6990 Check Price

Radeon R7 M340 Check Price

Radeon R7 M340 is a Laptop Graphics Card

Note: Radeon R7 M340 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 R7 M340 here:

Radeon R7 M340 Laptops

Main Specs

	Radeon HD 6990	Radeon R7 M340
Power consumption (TDP)	375 Watt
Interface	PCIe 2.0 x16	PCIe 3.0 x8
Supplementary power connectors	2x 8-pin	None
Memory type	GDDR5	DDR3
Maximum RAM amount	2 GB	4 GB
Display Connectors	1x DVI, 4x mini-DisplayPort	No outputs
	Check Price	Check Price

Radeon HD 6990 is connected by PCIe 2.0 x16, and Radeon R7 M340 uses PCIe 3.0 x8 interface.
Radeon R7 M340 has 2 GB more memory, than Radeon HD 6990.
Radeon HD 6990 is used in Desktops, and Radeon R7 M340 - in Laptops.
Radeon HD 6990 is build with TeraScale 3 architecture, and Radeon R7 M340 - with GCN.
Core clock speed of Radeon R7 M340 is 191 MHz higher, than Radeon HD 6990.
Radeon HD 6990 is manufactured by 40 nm process technology, and Radeon R7 M340 - by 28 nm process technology.
Memory clock speed of Radeon HD 6990 is 4000 MHz higher, than Radeon R7 M340.

Game benchmarks


high / 1080p	14−16	0−1
ultra / 1080p	9−10	−
QHD / 1440p	3−4	0−1
low / 720p	30−35	1−2
medium / 1080p	18−20	0−1
The average gaming FPS of Radeon HD 6990 in Assassin's Creed Odyssey is 3100% more, than Radeon R7 M340.
high / 1080p	24−27	−
ultra / 1080p	21−24	−
QHD / 1440p	7−8	0−1
4K / 2160p	5−6	−
low / 720p	50−55	0−1
medium / 1080p	27−30	−
low / 768p	45−50	50−55
high / 1080p	−	45−50
QHD / 1440p	0−1	0−1
The average gaming FPS of Radeon R7 M340 in Call of Duty: Warzone is 10% more, than Radeon HD 6990.
low / 768p	210−220	60−65
medium / 768p	170−180	27−30
ultra / 1080p	95−100	7−8
QHD / 1440p	50−55	−
4K / 2160p	30−33	−
high / 768p	140−150	16−18
The average gaming FPS of Radeon HD 6990 in Counter-Strike: Global Offensive is 464% more, than Radeon R7 M340.
low / 768p	55−60	70−75
ultra / 1080p	40−45	0−1
medium / 1080p	45−50	45−50
The average gaming FPS of Radeon R7 M340 in Cyberpunk 2077 is 15% more, than Radeon HD 6990.
low / 768p	110−120	45−50
medium / 768p	90−95	10−11
ultra / 1080p	60−65	0−1
The average gaming FPS of Radeon HD 6990 in Dota 2 is 255% more, than Radeon R7 M340.
high / 1080p	18−20	−
ultra / 1080p	16−18	−
4K / 2160p	6−7	−
low / 720p	35−40	0−1
medium / 1080p	18−20	−
high / 1080p	24−27	−
ultra / 1080p	18−20	−
QHD / 1440p	16−18	−
low / 720p	95−100	21−24
medium / 1080p	50−55	0−1
The average gaming FPS of Radeon HD 6990 in Fortnite is 340% more, than Radeon R7 M340.
high / 1080p	24−27	0−1
ultra / 1080p	20−22	−
QHD / 1440p	9−10	0−1
low / 720p	50−55	0−1
medium / 1080p	27−30	0−1
low / 768p	85−90	18−20
medium / 768p	75−80	−
high / 1080p	30−33	0−1
ultra / 1080p	12−14	−
QHD / 1440p	3−4	0−1
medium / 720p	−	12−14
The average gaming FPS of Radeon HD 6990 in Grand Theft Auto V is 357% more, than Radeon R7 M340.
high / 1080p	9−10	−
ultra / 1080p	7−8	−
4K / 2160p	2−3	−
low / 720p	27−30	0−1
medium / 1080p	12−14	−
low / 768p	110−120	75−80
high / 1080p	−	27−30
ultra / 1080p	100−110	−
medium / 1080p	100−110	−
The average gaming FPS of Radeon HD 6990 in Minecraft is 49% more, than Radeon R7 M340.
high / 1080p	21−24	−
ultra / 1080p	18−20	−
low / 720p	55−60	8−9
medium / 1080p	24−27	−
The average gaming FPS of Radeon HD 6990 in PLAYERUNKNOWN'S BATTLEGROUNDS is 612% more, than Radeon R7 M340.
high / 1080p	14−16	−
ultra / 1080p	9−10	−
QHD / 1440p	0−1	−
low / 720p	27−30	0−1
medium / 1080p	16−18	−
low / 768p	55−60	0−1
medium / 768p	30−35	−
high / 1080p	18−20	−
ultra / 1080p	10−12	−
4K / 2160p	8−9	−
low / 768p	100−110	45−50
medium / 768p	60−65	14−16
ultra / 1080p	35−40	0−1
high / 768p	50−55	12−14
The average gaming FPS of Radeon HD 6990 in World of Tanks is 192% more, than Radeon R7 M340.

Full Specs

	Radeon HD 6990	Radeon R7 M340
Architecture	TeraScale 3	GCN
Code name	Antilles	Meso Pro DDR3
Type	Desktop	Laptop
Release date	8 March 2011	16 June 2015
Pipelines	1536	320
Core clock speed	830 MHz	1021 MHz
Boost Clock		1021 MHz
Transistor count	2,640 million	950 million
Manufacturing process technology	40 nm	28 nm
Texture fill rate	79.68	17.16
Floating-point performance	2x 2,549.8 gflops	549.1 gflops
Length	295 mm
Memory bus width	256 Bit	128 Bit
Memory clock speed	5000 MHz	1000 MHz
Memory bandwidth	160.0 GB/s	16 GB/s
Shared memory		-
DirectX	11.2 (11_0)
Shader Model	5.0	5.1
OpenGL	4.4	4.4
OpenCL	1.2	Not Listed
Vulkan	N/A	+
FreeSync		+
Bus support		PCIe 3.0
Bitcoin / BTC (SHA256)	265 Mh/s	74 Mh/s
Eyefinity		+
HD3D		+
PowerTune		+
DualGraphics		+
ZeroCore		+
Switchable graphics		+
Mantle		+
Ethereum / ETH (DaggerHashimoto)	24 Mh/s
Compute units		6
	Check Price	Check Price

Radeon HD 6990 vs Radeon R7 M340

Radeon R7 M340 is a Laptop Graphics Card

Main Specs

Game benchmarks

Full Specs

Similar compares