Maxwell GPU Surface Book 940M GDDR5 vs Radeon HD 6990
When choosing between Maxwell GPU Surface Book 940M GDDR5 and Radeon HD 6990, 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 Maxwell GPU Surface Book 940M GDDR5 and Radeon HD 6990.
Maxwell GPU Surface Book 940M GDDR5 is a Laptop Graphics Card
Note: Maxwell GPU Surface Book 940M GDDR5 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 Maxwell GPU Surface Book 940M GDDR5 here:
Main Specs
Maxwell GPU Surface Book 940M GDDR5
Radeon HD 6990
Power consumption (TDP)
375 Watt
Interface
PCIe 2.0 x16
Supplementary power connectors
2x 8-pin
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
2 GB
Display Connectors
1x DVI, 4x mini-DisplayPort
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Radeon HD 6990 has 1 GB more memory, than Maxwell GPU Surface Book 940M GDDR5.
Maxwell GPU Surface Book 940M GDDR5 is used in Laptops, and Radeon HD 6990 - in Desktops.
Maxwell GPU Surface Book 940M GDDR5 is build with Maxwell architecture, and Radeon HD 6990 - with TeraScale 3.
Core clock speed of Maxwell GPU Surface Book 940M GDDR5 is 124 MHz higher, than Radeon HD 6990.
Maxwell GPU Surface Book 940M GDDR5 is manufactured by 28 nm process technology, and Radeon HD 6990 - by 40 nm process technology.
Memory clock speed of Maxwell GPU Surface Book 940M GDDR5 is 12 MHz higher, than Radeon HD 6990.
Game benchmarks
Assassin's Creed Odyssey
Battlefield 5
Call of Duty: Warzone
Counter-Strike: Global Offensive
Cyberpunk 2077
Dota 2
Far Cry 5
Fortnite
Forza Horizon 4
Grand Theft Auto V
Metro Exodus
Minecraft
PLAYERUNKNOWN'S BATTLEGROUNDS
Red Dead Redemption 2
The Witcher 3: Wild Hunt
World of Tanks
high / 1080p
9−10
14−16
ultra / 1080p
5−6
9−10
QHD / 1440p
0−1
3−4
low / 720p
21−24
30−35
medium / 1080p
12−14
18−20
The average gaming FPS of Radeon HD 6990 in Assassin's Creed Odyssey is 58% more, than Maxwell GPU Surface Book 940M GDDR5.
high / 1080p
16−18
24−27
ultra / 1080p
14−16
21−24
QHD / 1440p
0−1
7−8
4K / 2160p
−
5−6
low / 720p
30−35
50−55
medium / 1080p
16−18
27−30
The average gaming FPS of Radeon HD 6990 in Battlefield 5 is 60% more, than Maxwell GPU Surface Book 940M GDDR5.
low / 768p
45−50
45−50
QHD / 1440p
0−1
0−1
Maxwell GPU Surface Book 940M GDDR5 and Radeon HD 6990 have the same average FPS in Call of Duty: Warzone.
low / 768p
160−170
210−220
medium / 768p
130−140
170−180
ultra / 1080p
70−75
95−100
QHD / 1440p
40−45
50−55
4K / 2160p
30−33
30−33
high / 768p
100−110
140−150
The average gaming FPS of Radeon HD 6990 in Counter-Strike: Global Offensive is 30% more, than Maxwell GPU Surface Book 940M GDDR5.
low / 768p
55−60
55−60
ultra / 1080p
27−30
40−45
medium / 1080p
45−50
45−50
The average gaming FPS of Radeon HD 6990 in Cyberpunk 2077 is 11% more, than Maxwell GPU Surface Book 940M GDDR5.
low / 768p
90−95
110−120
medium / 768p
70−75
90−95
ultra / 1080p
45−50
60−65
The average gaming FPS of Radeon HD 6990 in Dota 2 is 28% more, than Maxwell GPU Surface Book 940M GDDR5.
high / 1080p
10−12
18−20
ultra / 1080p
10−11
16−18
4K / 2160p
4−5
6−7
low / 720p
24−27
35−40
medium / 1080p
12−14
18−20
The average gaming FPS of Radeon HD 6990 in Far Cry 5 is 58% more, than Maxwell GPU Surface Book 940M GDDR5.
high / 1080p
18−20
24−27
ultra / 1080p
12−14
18−20
QHD / 1440p
−
16−18
low / 720p
75−80
95−100
medium / 1080p
30−35
50−55
The average gaming FPS of Radeon HD 6990 in Fortnite is 37% more, than Maxwell GPU Surface Book 940M GDDR5.
high / 1080p
16−18
24−27
ultra / 1080p
14−16
20−22
QHD / 1440p
4−5
9−10
low / 720p
35−40
50−55
medium / 1080p
18−20
27−30
The average gaming FPS of Radeon HD 6990 in Forza Horizon 4 is 50% more, than Maxwell GPU Surface Book 940M GDDR5.
low / 768p
65−70
85−90
medium / 768p
55−60
75−80
high / 1080p
18−20
30−33
ultra / 1080p
8−9
12−14
QHD / 1440p
0−1
3−4
The average gaming FPS of Radeon HD 6990 in Grand Theft Auto V is 36% more, than Maxwell GPU Surface Book 940M GDDR5.
high / 1080p
6−7
9−10
ultra / 1080p
4−5
7−8
4K / 2160p
1−2
2−3
low / 720p
18−20
27−30
medium / 1080p
8−9
12−14
The average gaming FPS of Radeon HD 6990 in Metro Exodus is 50% more, than Maxwell GPU Surface Book 940M GDDR5.
low / 768p
100−110
110−120
ultra / 1080p
90−95
100−110
medium / 1080p
95−100
100−110
The average gaming FPS of Radeon HD 6990 in Minecraft is 10% more, than Maxwell GPU Surface Book 940M GDDR5.
high / 1080p
18−20
21−24
ultra / 1080p
14−16
18−20
low / 720p
40−45
55−60
medium / 1080p
20−22
24−27
The average gaming FPS of Radeon HD 6990 in PLAYERUNKNOWN'S BATTLEGROUNDS is 29% more, than Maxwell GPU Surface Book 940M GDDR5.
high / 1080p
12−14
14−16
ultra / 1080p
8−9
9−10
QHD / 1440p
0−1
0−1
low / 720p
18−20
27−30
medium / 1080p
12−14
16−18
The average gaming FPS of Radeon HD 6990 in Red Dead Redemption 2 is 30% more, than Maxwell GPU Surface Book 940M GDDR5.
low / 768p
35−40
55−60
medium / 768p
21−24
30−35
high / 1080p
12−14
18−20
ultra / 1080p
8−9
10−12
4K / 2160p
7−8
8−9
The average gaming FPS of Radeon HD 6990 in The Witcher 3: Wild Hunt is 47% more, than Maxwell GPU Surface Book 940M GDDR5.
low / 768p
90−95
100−110
medium / 768p
50−55
60−65
ultra / 1080p
24−27
35−40
high / 768p
40−45
50−55
The average gaming FPS of Radeon HD 6990 in World of Tanks is 20% more, than Maxwell GPU Surface Book 940M GDDR5.
Full Specs
Maxwell GPU Surface Book 940M GDDR5
Radeon HD 6990
Architecture
Maxwell
TeraScale 3
Code name
Surface Book
Antilles
Type
Laptop
Desktop
Release date
1 October 2015
8 March 2011
Pipelines
384
1536
Core clock speed
954 MHz
830 MHz
Boost Clock
993 MHz
Transistor count
2,640 million
Manufacturing process technology
28 nm
40 nm
Texture fill rate
79.68
Floating-point performance
2x 2,549.8 gflops
Length
295 mm
Memory bus width
64 Bit
256 Bit
Memory clock speed
5012 MHz
5000 MHz
Memory bandwidth
160.0 GB/s
Shared memory
-
DirectX
DirectX 12 (FL 11_0), Shader 5.0
11.2 (11_0)
Shader Model
5.0
OpenGL
4.4
OpenCL
1.2
Vulkan
N/A
CUDA
+
Bitcoin / BTC (SHA256)
265 Mh/s
Optimus
+
Ethereum / ETH (DaggerHashimoto)
24 Mh/s
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