Radeon R6 M340DX vs HD 6990M

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Aggregate performance score

We've compared Radeon HD 6990M and Radeon R6 M340DX, covering specs and all relevant benchmarks.

HD 6990M
2011
2 GB GDDR5, 100 Watt
4.57
+71.8%

HD 6990M outperforms R6 M340DX by an impressive 72% based on our aggregate benchmark results.

Primary details

GPU architecture, market segment, value for money and other general parameters compared.

Place in the ranking700857
Place by popularitynot in top-100not in top-100
Power efficiency3.52no data
ArchitectureTeraScale 2 (2009−2015)GCN 1.0 (2012−2020)
GPU code nameBlackcombJet
Market segmentLaptopLaptop
Release date12 July 2011 (14 years ago)12 December 2015 (10 years ago)

Detailed specifications

General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores1120384
Core clock speed715 MHz955 MHz
Boost clock speedno data1030 MHz
Number of transistors1,700 million690 million
Manufacturing process technology40 nm28 nm
Power consumption (TDP)100 Wattno data
Texture fill rate40.0424.72
Floating-point processing power1.602 TFLOPS0.791 TFLOPS
ROPs328
TMUs5624
L1 Cache224 KB96 KB
L2 Cache512 KB256 KB

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).

Laptop sizelargemedium sized
InterfaceMXM-B (3.0)IGP
Supplementary power connectorsNoneno 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 typeGDDR5System Shared
Maximum RAM amount2 GBSystem Shared
Memory bus width256 BitSystem Shared
Memory clock speed900 MHzSystem Shared
Memory bandwidth115.2 GB/sno data
Shared memory-+

Connectivity and outputs

This section shows the types and number of video connectors on each GPU. The data applies specifically to desktop reference models (for example, NVIDIA’s Founders Edition). OEM partners often modify both the number and types of ports. On notebook GPUs, video‐output options are determined by the laptop’s design rather than the graphics chip itself.

Display ConnectorsNo outputsNo outputs

API and SDK support

List of supported 3D and general-purpose computing APIs, including their specific versions.

DirectX11.2 (11_0)12 (11_1)
Shader Model5.05.1
OpenGL4.44.6
OpenCL1.21.2
VulkanN/A1.2.131

Synthetic benchmarks

Non-gaming benchmark results comparison. The combined score is measured on a 0-100 point scale.


Combined synthetic benchmark score

This is our combined benchmark score.

HD 6990M 4.57
+71.8%
R6 M340DX 2.66

3DMark 11 Performance GPU

3DMark 11 is an obsolete DirectX 11 benchmark by Futuremark. It used four tests based on two scenes, one being few submarines exploring the submerged wreck of a sunken ship, the other is an abandoned temple deep in the jungle. All the tests are heavy with volumetric lighting and tessellation, and despite being done in 1280x720 resolution, are relatively taxing. Discontinued in January 2020, 3DMark 11 is now superseded by Time Spy.

HD 6990M 3227
+20.4%
R6 M340DX 2681

Gaming performance

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

Average FPS across all PC games

Here are the average frames per second in a large set of popular games across different resolutions:

900p54
+80%
30−35
−80%
Full HD60
+500%
10
−500%

FPS performance in popular games

Full HD
Low

Counter-Strike 2 20−22
+150%
8−9
−150%
Cyberpunk 2077 9−10
+80%
5−6
−80%
Resident Evil 4 Remake 7−8
+133%
3−4
−133%

Full HD
Medium

Battlefield 5 18−20
+111%
9−10
−111%
Counter-Strike 2 20−22
+150%
8−9
−150%
Cyberpunk 2077 9−10
+80%
5−6
−80%
Far Cry 5 14−16
+100%
7−8
−100%
Fortnite 27−30
+92.9%
14−16
−92.9%
Forza Horizon 4 21−24
+57.1%
14−16
−57.1%
Forza Horizon 5 12−14
+117%
6−7
−117%
PLAYERUNKNOWN'S BATTLEGROUNDS 18−20
+38.5%
12−14
−38.5%
Valorant 55−60
+34.1%
40−45
−34.1%

Full HD
High

Battlefield 5 18−20
+111%
9−10
−111%
Counter-Strike 2 20−22
+150%
8−9
−150%
Counter-Strike: Global Offensive 80−85
+53.8%
50−55
−53.8%
Cyberpunk 2077 9−10
+80%
5−6
−80%
Dota 2 40−45
+48.1%
27−30
−48.1%
Far Cry 5 14−16
+100%
7−8
−100%
Fortnite 27−30
+92.9%
14−16
−92.9%
Forza Horizon 4 21−24
+57.1%
14−16
−57.1%
Forza Horizon 5 12−14
+117%
6−7
−117%
Grand Theft Auto V 14−16
+150%
6−7
−150%
Metro Exodus 9−10
+80%
5−6
−80%
PLAYERUNKNOWN'S BATTLEGROUNDS 18−20
+38.5%
12−14
−38.5%
The Witcher 3: Wild Hunt 12−14
+117%
6
−117%
Valorant 55−60
+34.1%
40−45
−34.1%

Full HD
Ultra

Battlefield 5 18−20
+111%
9−10
−111%
Cyberpunk 2077 9−10
+80%
5−6
−80%
Dota 2 40−45
+48.1%
27−30
−48.1%
Far Cry 5 14−16
+100%
7−8
−100%
Forza Horizon 4 21−24
+57.1%
14−16
−57.1%
PLAYERUNKNOWN'S BATTLEGROUNDS 18−20
+38.5%
12−14
−38.5%
The Witcher 3: Wild Hunt 12−14
+333%
3
−333%
Valorant 55−60
+34.1%
40−45
−34.1%

Full HD
Epic

Fortnite 27−30
+92.9%
14−16
−92.9%

1440p
High

Counter-Strike 2 9−10
+50%
6−7
−50%
Counter-Strike: Global Offensive 35−40
+75%
20−22
−75%
Grand Theft Auto V 3−4
+200%
1−2
−200%
Metro Exodus 3−4 0−1
PLAYERUNKNOWN'S BATTLEGROUNDS 35−40
+40%
24−27
−40%
Valorant 50−55
+108%
24−27
−108%

1440p
Ultra

Battlefield 5 3−4
+200%
1−2
−200%
Cyberpunk 2077 3−4
+50%
2−3
−50%
Far Cry 5 9−10
+125%
4−5
−125%
Forza Horizon 4 10−12
+57.1%
7−8
−57.1%
The Witcher 3: Wild Hunt 7−8
+75%
4−5
−75%

1440p
Epic

Fortnite 9−10
+80%
5−6
−80%

4K
High

Grand Theft Auto V 16−18
+6.7%
14−16
−6.7%
The Witcher 3: Wild Hunt 0−1 0−1
Valorant 21−24
+76.9%
12−14
−76.9%

4K
Ultra

Battlefield 5 1−2 0−1
Cyberpunk 2077 1−2 0−1
Dota 2 16−18
+129%
7−8
−129%
Far Cry 5 3−4
+200%
1−2
−200%
Forza Horizon 4 6−7
+200%
2−3
−200%
PLAYERUNKNOWN'S BATTLEGROUNDS 5−6
+66.7%
3−4
−66.7%

4K
Epic

Fortnite 5−6
+66.7%
3−4
−66.7%

This is how HD 6990M and R6 M340DX compete in popular games:

  • HD 6990M is 80% faster in 900p
  • HD 6990M is 500% faster in 1080p

Here's the range of performance differences observed across popular games:

  • in The Witcher 3: Wild Hunt, with 1080p resolution and the Ultra Preset, the HD 6990M is 333% faster.

All in all, in popular games:

  • Without exception, HD 6990M surpassed R6 M340DX in all 51 of our tests.

Pros & cons summary


Performance score 4.57 2.66
Recency 12 July 2011 12 December 2015
Chip lithography 40 nm 28 nm

HD 6990M has a 72% higher aggregate performance score.

R6 M340DX, on the other hand, has an age advantage of 4 years, and a 43% more advanced lithography process.

The Radeon HD 6990M is our recommended choice as it beats the Radeon R6 M340DX in performance tests.

Other comparisons

We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.

Community ratings

Here you can see the user ratings of the compared graphics cards, as well as rate them yourself.


3.6 14 votes

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3.7 37 votes

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