GeForce 9800M GTX SLI vs GeForce GT 645M
If you are going to buy a new graphics card and are choosing between GeForce 9800M GTX SLI and GeForce GT 645M, 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 GeForce 9800M GTX SLI stacks up against GeForce GT 645M, check out specs charts below.
GeForce 9800M GTX SLI and GeForce GT 645M are Laptop Graphics Cards
Note: GeForce 9800M GTX SLI and GeForce GT 645M are only used in laptop graphics. They have 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 GeForce 9800M GTX SLI or GeForce GT 645M here:
Main Specs
GeForce 9800M GTX SLI
GeForce GT 645M
Power consumption (TDP)
150 Watt
32 Watt
Interface
PCIe 3.0 x16
Memory type
GDDR3
DDR3\GDDR5
Maximum RAM amount
1 GB
2 GB
Display Connectors
No outputs
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GeForce 9800M GTX SLI has 368% more power consumption, than GeForce GT 645M.
GeForce GT 645M has 1 GB more memory, than GeForce 9800M GTX SLI.
Both cards are used in Laptops.
GeForce 9800M GTX SLI is build with G9x architecture, and GeForce GT 645M - with Kepler.
GeForce 9800M GTX SLI is manufactured by 65 nm process technology, and GeForce GT 645M - by 28 nm process technology.
Memory clock speed of GeForce GT 645M is 1000 MHz higher, than GeForce 9800M GTX SLI.
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
10−11
1−2
ultra / 1080p
6−7
0−1
QHD / 1440p
0−1
0−1
low / 720p
21−24
12−14
medium / 1080p
12−14
2−3
The average gaming FPS of GeForce 9800M GTX SLI in Assassin's Creed Odyssey is 200% more, than GeForce GT 645M.
high / 1080p
16−18
−
ultra / 1080p
14−16
3−4
QHD / 1440p
0−1
0−1
low / 720p
35−40
12−14
medium / 1080p
18−20
4−5
The average gaming FPS of GeForce 9800M GTX SLI in Battlefield 5 is 228% more, than GeForce GT 645M.
low / 768p
45−50
50−55
high / 1080p
−
45−50
QHD / 1440p
0−1
0−1
The average gaming FPS of GeForce GT 645M in Call of Duty: Warzone is 10% more, than GeForce 9800M GTX SLI.
low / 768p
170−180
110−120
medium / 768p
140−150
85−90
ultra / 1080p
70−75
35−40
QHD / 1440p
40−45
−
4K / 2160p
30−33
10−11
high / 768p
100−110
60−65
The average gaming FPS of GeForce 9800M GTX SLI in Counter-Strike: Global Offensive is 69% more, than GeForce GT 645M.
low / 768p
55−60
70−75
ultra / 1080p
27−30
14−16
medium / 1080p
45−50
45−50
The average gaming FPS of GeForce GT 645M in Cyberpunk 2077 is 2% more, than GeForce 9800M GTX SLI.
low / 768p
90−95
70−75
medium / 768p
75−80
45−50
ultra / 1080p
45−50
18−20
The average gaming FPS of GeForce 9800M GTX SLI in Dota 2 is 56% more, than GeForce GT 645M.
high / 1080p
12−14
2−3
ultra / 1080p
10−12
2−3
4K / 2160p
4−5
0−1
low / 720p
27−30
10−11
medium / 1080p
12−14
3−4
The average gaming FPS of GeForce 9800M GTX SLI in Far Cry 5 is 300% more, than GeForce GT 645M.
high / 1080p
18−20
−
ultra / 1080p
14−16
5−6
QHD / 1440p
−
1−2
low / 720p
75−80
45−50
medium / 1080p
35−40
8−9
The average gaming FPS of GeForce 9800M GTX SLI in Fortnite is 115% more, than GeForce GT 645M.
high / 1080p
16−18
3−4
ultra / 1080p
14−16
−
QHD / 1440p
4−5
0−1
low / 720p
35−40
14−16
medium / 1080p
20−22
6−7
The average gaming FPS of GeForce 9800M GTX SLI in Forza Horizon 4 is 212% more, than GeForce GT 645M.
low / 768p
65−70
40−45
medium / 768p
55−60
−
high / 1080p
18−20
3−4
ultra / 1080p
8−9
2−3
QHD / 1440p
0−1
0−1
medium / 720p
−
35−40
The average gaming FPS of GeForce 9800M GTX SLI in Grand Theft Auto V is 93% more, than GeForce GT 645M.
high / 1080p
6−7
1−2
ultra / 1080p
5−6
0−1
4K / 2160p
1−2
0−1
low / 720p
18−20
3−4
medium / 1080p
9−10
2−3
The average gaming FPS of GeForce 9800M GTX SLI in Metro Exodus is 450% more, than GeForce GT 645M.
low / 768p
100−110
85−90
high / 1080p
−
55−60
ultra / 1080p
90−95
−
medium / 1080p
95−100
−
The average gaming FPS of GeForce 9800M GTX SLI in Minecraft is 20% more, than GeForce GT 645M.
high / 1080p
18−20
14−16
ultra / 1080p
14−16
12−14
low / 720p
40−45
24−27
medium / 1080p
20−22
14−16
The average gaming FPS of GeForce 9800M GTX SLI in PLAYERUNKNOWN'S BATTLEGROUNDS is 41% more, than GeForce GT 645M.
high / 1080p
12−14
−
ultra / 1080p
8−9
3−4
QHD / 1440p
0−1
0−1
low / 720p
18−20
4−5
medium / 1080p
12−14
−
The average gaming FPS of GeForce 9800M GTX SLI in Red Dead Redemption 2 is 225% more, than GeForce GT 645M.
low / 768p
35−40
8−9
medium / 768p
21−24
7−8
high / 1080p
12−14
3−4
ultra / 1080p
8−9
3−4
4K / 2160p
7−8
0−1
The average gaming FPS of GeForce 9800M GTX SLI in The Witcher 3: Wild Hunt is 300% more, than GeForce GT 645M.
low / 768p
90−95
70−75
medium / 768p
50−55
35−40
ultra / 1080p
24−27
12−14
high / 768p
45−50
30−33
The average gaming FPS of GeForce 9800M GTX SLI in World of Tanks is 42% more, than GeForce GT 645M.
Full Specs
GeForce 9800M GTX SLI
GeForce GT 645M
Architecture
G9x
Kepler
Code name
NB9E-GTX
N13P-GS
Type
Laptop
Laptop
Release date
15 July 2008
22 March 2012
Pipelines
224
384
Core clock speed
500 MHz
Transistor count
3016 Million
1,270 million
Manufacturing process technology
65 nm
28 nm
Texture fill rate
22.7 billion/sec
Floating-point performance
544.5 gflops
Memory bus width
256 Bit
128bit
Memory clock speed
800 MHz
1800 MHz
Shared memory
-
-
DirectX
DirectX 10, Shader 4.0
12 API
Shader Model
5.1
OpenGL
4.5
OpenCL
1.1
Vulkan
1.1.126
CUDA
+
+
CUDA cores
384
Bus support
PCI Express 2.0, PCI Express 3.0
SLI options
+
HDMI
+
HDCP
+
Maximum VGA resolution
Up to 2048x1536
3D Blu-Ray
+
Bitcoin / BTC (SHA256)
19 Mh/s
Laptop size
large
medium sized
Optimus
+
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