Iris Plus Graphics 645 vs Radeon HD 7870 XT
When comparing Iris Plus Graphics 645 and Radeon HD 7870 XT, we look primarily at benchmarks and game tests. But it is not only about the numbers. Often you can find third-party models with higher clock speeds, better cooling, or a customizable RGB lighting. Not all of them will have all the features you need. Another thing to consider is the port selection. Most graphics cards have at least one DisplayPort and HDMI interface, but some monitors require DVI. Before you buy, check the TDP of the graphics card - this characteristic will help you estimate the consumption of the graphics card. You may even have to upgrade your PSU to meet its requirements. An important factor when choosing between Iris Plus Graphics 645 and Radeon HD 7870 XT is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
Radeon HD 7870 XT
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 7870 XT | |
Power consumption (TDP) | 15 Watt | 185 Watt |
Interface | PCIe 3.0 x1 | PCIe 3.0 x16 |
Supplementary power connectors | 2x 6-pin | |
Memory type | DDR3/DDR4 | GDDR5 |
Maximum RAM amount | 2 GB | |
Display Connectors | No outputs | 1x DVI, 1x HDMI, 2x mini-DisplayPort |
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- Radeon HD 7870 XT has 1133% more power consumption, than Iris Plus Graphics 645.
- Iris Plus Graphics 645 is connected by PCIe 3.0 x1, and Radeon HD 7870 XT uses PCIe 3.0 x16 interface.
- Iris Plus Graphics 645 is used in Laptops, and Radeon HD 7870 XT - in Desktops.
- Iris Plus Graphics 645 is build with Gen. 9.5 Coffee Lake architecture, and Radeon HD 7870 XT - with GCN 1.0.
- Core clock speed of Radeon HD 7870 XT is 625 MHz higher, than Iris Plus Graphics 645.
- Iris Plus Graphics 645 is manufactured by 14 nm process technology, and Radeon HD 7870 XT - by 28 nm process technology.
Game benchmarks
high / 1080p | 4−5 | 35−40 |
ultra / 1080p | 2−3 | 21−24 |
QHD / 1440p | 0−1 | 16−18 |
4K / 2160p | − | 10−11 |
low / 720p | 12−14 | 60−65 |
medium / 1080p | 5−6 | 40−45 |
The average gaming FPS of Radeon HD 7870 XT in Assassin's Creed Odyssey is 583% more, than Iris Plus Graphics 645. | ||
high / 1080p | − | 55−60 |
ultra / 1080p | 7−8 | 45−50 |
QHD / 1440p | 0−1 | 35−40 |
4K / 2160p | − | 18−20 |
low / 720p | 16−18 | 100−110 |
medium / 1080p | 8−9 | 60−65 |
The average gaming FPS of Radeon HD 7870 XT in Battlefield 5 is 545% more, than Iris Plus Graphics 645. | ||
low / 768p | 45−50 | 50−55 |
high / 1080p | 45−50 | − |
QHD / 1440p | 0−1 | 0−1 |
The average gaming FPS of Radeon HD 7870 XT in Call of Duty: Warzone is 10% more, than Iris Plus Graphics 645. | ||
low / 768p | 100−110 | 250−260 |
medium / 768p | 80−85 | 220−230 |
ultra / 1080p | 35−40 | 180−190 |
QHD / 1440p | 24−27 | 110−120 |
4K / 2160p | − | 70−75 |
high / 768p | 60−65 | 210−220 |
The average gaming FPS of Radeon HD 7870 XT in Counter-Strike: Global Offensive is 220% more, than Iris Plus Graphics 645. | ||
low / 768p | 55−60 | 60−65 |
ultra / 1080p | 12−14 | − |
medium / 1080p | 45−50 | 55−60 |
The average gaming FPS of Radeon HD 7870 XT in Cyberpunk 2077 is 15% more, than Iris Plus Graphics 645. | ||
low / 768p | 65−70 | 120−130 |
medium / 768p | 45−50 | 110−120 |
ultra / 1080p | 21−24 | 100−110 |
The average gaming FPS of Radeon HD 7870 XT in Dota 2 is 155% more, than Iris Plus Graphics 645. | ||
high / 1080p | 5−6 | 45−50 |
ultra / 1080p | 5−6 | 40−45 |
QHD / 1440p | − | 27−30 |
4K / 2160p | 3−4 | 14−16 |
low / 720p | 12−14 | 80−85 |
medium / 1080p | 5−6 | 45−50 |
The average gaming FPS of Radeon HD 7870 XT in Far Cry 5 is 683% more, than Iris Plus Graphics 645. | ||
high / 1080p | 12−14 | 60−65 |
ultra / 1080p | 8−9 | 45−50 |
QHD / 1440p | − | 27−30 |
4K / 2160p | − | 27−30 |
low / 720p | 45−50 | 180−190 |
medium / 1080p | 12−14 | 110−120 |
The average gaming FPS of Radeon HD 7870 XT in Fortnite is 410% more, than Iris Plus Graphics 645. | ||
high / 1080p | 8−9 | 60−65 |
ultra / 1080p | − | 45−50 |
QHD / 1440p | 0−1 | 30−35 |
4K / 2160p | − | 24−27 |
low / 720p | 16−18 | 100−110 |
medium / 1080p | 9−10 | 65−70 |
The average gaming FPS of Radeon HD 7870 XT in Forza Horizon 4 is 609% more, than Iris Plus Graphics 645. | ||
low / 768p | 40−45 | 140−150 |
medium / 768p | 35−40 | 120−130 |
high / 1080p | 7−8 | 70−75 |
ultra / 1080p | 5−6 | 30−35 |
QHD / 1440p | 0−1 | 21−24 |
The average gaming FPS of Radeon HD 7870 XT in Grand Theft Auto V is 304% more, than Iris Plus Graphics 645. | ||
high / 1080p | 3−4 | 24−27 |
ultra / 1080p | 2−3 | 20−22 |
QHD / 1440p | − | 16−18 |
4K / 2160p | 0−1 | 8−9 |
low / 720p | 7−8 | 65−70 |
medium / 1080p | 4−5 | 30−35 |
The average gaming FPS of Radeon HD 7870 XT in Metro Exodus is 800% more, than Iris Plus Graphics 645. | ||
low / 768p | 85−90 | 130−140 |
high / 1080p | 80−85 | − |
ultra / 1080p | 70−75 | − |
medium / 1080p | − | 120−130 |
The average gaming FPS of Radeon HD 7870 XT in Minecraft is 55% more, than Iris Plus Graphics 645. | ||
high / 1080p | 16−18 | − |
ultra / 1080p | 14−16 | 14−16 |
low / 720p | 24−27 | 100−110 |
medium / 1080p | 16−18 | 18−20 |
The average gaming FPS of Radeon HD 7870 XT in PLAYERUNKNOWN'S BATTLEGROUNDS is 142% more, than Iris Plus Graphics 645. | ||
high / 1080p | − | 24−27 |
ultra / 1080p | 7−8 | 16−18 |
QHD / 1440p | 0−1 | 10−11 |
4K / 2160p | − | 7−8 |
low / 720p | 7−8 | 65−70 |
medium / 1080p | − | 35−40 |
The average gaming FPS of Radeon HD 7870 XT in Red Dead Redemption 2 is 500% more, than Iris Plus Graphics 645. | ||
low / 768p | 16−18 | 130−140 |
medium / 768p | 12−14 | 85−90 |
high / 1080p | 6−7 | 45−50 |
ultra / 1080p | 5−6 | 24−27 |
4K / 2160p | − | 16−18 |
The average gaming FPS of Radeon HD 7870 XT in The Witcher 3: Wild Hunt is 630% more, than Iris Plus Graphics 645. | ||
low / 768p | 80−85 | 90−95 |
medium / 768p | 35−40 | 60−65 |
ultra / 1080p | 14−16 | 50−55 |
high / 768p | 30−33 | 60−65 |
The average gaming FPS of Radeon HD 7870 XT in World of Tanks is 63% more, than Iris Plus Graphics 645. |
Full Specs
Iris Plus Graphics 645 | Radeon HD 7870 XT | |
Architecture | Gen. 9.5 Coffee Lake | GCN 1.0 |
Code name | Kaby Lake GT3e | Tahiti |
Type | Laptop | Desktop |
Release date | 10 July 2019 | 19 November 2012 |
Pipelines | 48 | 1536 |
Core clock speed | 300 MHz | 925 MHz |
Boost Clock | 1150 MHz | 975 MHz |
Transistor count | 4,313 million | |
Manufacturing process technology | 14 nm | 28 nm |
Texture fill rate | 50.40 | 93.60 |
Floating-point performance | 2,995 gflops | |
Length | 267 mm | |
Memory bus width | 256 Bit | |
Memory clock speed | 6000 MHz | |
Memory bandwidth | 192.0 GB/s | |
Shared memory | + | |
DirectX | 12 (12_1) | 12 (11_1) |
Shader Model | 6.4 | 5.1 |
OpenGL | 4.6 | 4.6 |
OpenCL | 2.1 | 1.2 |
Vulkan | 1.1.103 | 1.2.131 |
Bitcoin / BTC (SHA256) | 346 Mh/s | |
Ethereum / ETH (DaggerHashimoto) | 14.5 Mh/s | |
Quick Sync | + | |
Check Price |
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