Iris Plus Graphics 645 vs Radeon HD 6870
If you are going to buy a new graphics card and are choosing between Iris Plus Graphics 645 and Radeon HD 6870, 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 Iris Plus Graphics 645 stacks up against Radeon HD 6870, check out specs charts below.
Iris Plus Graphics 645 is a Laptop Graphics Card
Note: Iris Plus Graphics 645 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 Iris Plus Graphics 645 here:
Main Specs
Iris Plus Graphics 645
Radeon HD 6870
Power consumption (TDP)
15 Watt
151 Watt
Interface
PCIe 3.0 x1
PCIe 2.0 x16
Supplementary power connectors
2x 6-pin
Memory type
DDR3/DDR4
GDDR5
Maximum RAM amount
1 GB
Display Connectors
No outputs
2x DVI, 1x HDMI, 2x mini-DisplayPort
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Radeon HD 6870 has 906% more power consumption, than Iris Plus Graphics 645.
Iris Plus Graphics 645 is connected by PCIe 3.0 x1, and Radeon HD 6870 uses PCIe 2.0 x16 interface.
Iris Plus Graphics 645 is used in Laptops, and Radeon HD 6870 - in Desktops.
Iris Plus Graphics 645 is build with Gen. 9.5 Coffee Lake architecture, and Radeon HD 6870 - with Terascale 2.
Iris Plus Graphics 645 is manufactured by 14 nm process technology, and Radeon HD 6870 - by 40 nm process technology.
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
4−5
10−12
ultra / 1080p
2−3
6−7
QHD / 1440p
0−1
1−2
low / 720p
12−14
24−27
medium / 1080p
5−6
12−14
The average gaming FPS of Radeon HD 6870 in Assassin's Creed Odyssey is 133% more, than Iris Plus Graphics 645.
high / 1080p
−
18−20
ultra / 1080p
7−8
14−16
QHD / 1440p
0−1
1−2
low / 720p
16−18
35−40
medium / 1080p
8−9
20−22
The average gaming FPS of Radeon HD 6870 in Battlefield 5 is 118% more, than Iris Plus Graphics 645.
low / 768p
45−50
45−50
high / 1080p
45−50
−
QHD / 1440p
0−1
0−1
Iris Plus Graphics 645 and Radeon HD 6870 have the same average FPS in Call of Duty: Warzone.
low / 768p
100−110
180−190
medium / 768p
80−85
140−150
ultra / 1080p
35−40
75−80
QHD / 1440p
24−27
40−45
4K / 2160p
−
30−33
high / 768p
60−65
110−120
The average gaming FPS of Radeon HD 6870 in Counter-Strike: Global Offensive is 82% more, than Iris Plus Graphics 645.
low / 768p
55−60
55−60
ultra / 1080p
12−14
30−33
medium / 1080p
45−50
45−50
The average gaming FPS of Radeon HD 6870 in Cyberpunk 2077 is 15% more, than Iris Plus Graphics 645.
low / 768p
65−70
95−100
medium / 768p
45−50
75−80
ultra / 1080p
21−24
50−55
The average gaming FPS of Radeon HD 6870 in Dota 2 is 66% more, than Iris Plus Graphics 645.
high / 1080p
5−6
12−14
ultra / 1080p
5−6
12−14
4K / 2160p
3−4
5−6
low / 720p
12−14
27−30
medium / 1080p
5−6
14−16
The average gaming FPS of Radeon HD 6870 in Far Cry 5 is 150% more, than Iris Plus Graphics 645.
high / 1080p
12−14
20−22
ultra / 1080p
8−9
14−16
low / 720p
45−50
80−85
medium / 1080p
12−14
35−40
The average gaming FPS of Radeon HD 6870 in Fortnite is 95% more, than Iris Plus Graphics 645.
high / 1080p
8−9
18−20
ultra / 1080p
−
14−16
QHD / 1440p
0−1
5−6
low / 720p
16−18
40−45
medium / 1080p
9−10
21−24
The average gaming FPS of Radeon HD 6870 in Forza Horizon 4 is 154% more, than Iris Plus Graphics 645.
low / 768p
40−45
70−75
medium / 768p
35−40
60−65
high / 1080p
7−8
21−24
ultra / 1080p
5−6
9−10
QHD / 1440p
0−1
0−1
The average gaming FPS of Radeon HD 6870 in Grand Theft Auto V is 78% more, than Iris Plus Graphics 645.
high / 1080p
3−4
7−8
ultra / 1080p
2−3
5−6
4K / 2160p
0−1
1−2
low / 720p
7−8
21−24
medium / 1080p
4−5
9−10
The average gaming FPS of Radeon HD 6870 in Metro Exodus is 175% more, than Iris Plus Graphics 645.
low / 768p
85−90
100−110
high / 1080p
80−85
−
ultra / 1080p
70−75
90−95
medium / 1080p
−
100−105
The average gaming FPS of Radeon HD 6870 in Minecraft is 22% more, than Iris Plus Graphics 645.
high / 1080p
16−18
18−20
ultra / 1080p
14−16
16−18
low / 720p
24−27
45−50
medium / 1080p
16−18
21−24
The average gaming FPS of Radeon HD 6870 in PLAYERUNKNOWN'S BATTLEGROUNDS is 44% more, than Iris Plus Graphics 645.
high / 1080p
−
12−14
ultra / 1080p
7−8
8−9
QHD / 1440p
0−1
0−1
low / 720p
7−8
20−22
medium / 1080p
−
12−14
The average gaming FPS of Radeon HD 6870 in Red Dead Redemption 2 is 100% more, than Iris Plus Graphics 645.
low / 768p
16−18
40−45
medium / 768p
12−14
24−27
high / 1080p
6−7
14−16
ultra / 1080p
5−6
8−9
4K / 2160p
−
7−8
The average gaming FPS of Radeon HD 6870 in The Witcher 3: Wild Hunt is 120% more, than Iris Plus Graphics 645.
low / 768p
80−85
95−100
medium / 768p
35−40
55−60
ultra / 1080p
14−16
27−30
high / 768p
30−33
45−50
The average gaming FPS of Radeon HD 6870 in World of Tanks is 39% more, than Iris Plus Graphics 645.
Full Specs
Iris Plus Graphics 645
Radeon HD 6870
Architecture
Gen. 9.5 Coffee Lake
Terascale 2
Code name
Kaby Lake GT3e
RV940 Barts
Type
Laptop
Desktop
Release date
10 July 2019
22 October 2010
Pipelines
48
1120
Core clock speed
300 MHz
Boost Clock
1150 MHz
900 MHz
Transistor count
1,700 million
Manufacturing process technology
14 nm
40 nm
Texture fill rate
50.40
50.40
Floating-point performance
2,016.0 gflops
Length
220 mm
Memory bus width
256 Bit
Memory clock speed
1050 MHz
Memory bandwidth
134.4 GB/s
Shared memory
+
-
DirectX
12 (12_1)
Shader Model
6.4
5.0
OpenGL
4.6
4.4
OpenCL
2.1
1.2
Vulkan
1.1.103
Bus support
PCIe 2.0 x16
HDMI
+
Bitcoin / BTC (SHA256)
213 Mh/s
Eyefinity
+
Design
reference
CrossFire
+
Quick Sync
+
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