Radeon HD 6990M Crossfire vs Radeon HD 7870 XT

If you are going to buy a new graphics card and are choosing between Radeon HD 6990M Crossfire and Radeon HD 7870 XT, 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 Radeon HD 6990M Crossfire stacks up against Radeon HD 7870 XT, check out specs charts below.

Radeon HD 6990M Crossfire Check Price

Radeon HD 7870 XT

Radeon HD 6990M Crossfire is a Laptop Graphics Card

Note: Radeon HD 6990M Crossfire 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 Radeon HD 6990M Crossfire here:

Radeon HD 6990M Crossfire Laptops

Main Specs

	Radeon HD 6990M Crossfire	Radeon HD 7870 XT
Power consumption (TDP)		185 Watt
Interface		PCIe 3.0 x16
Supplementary power connectors		2x 6-pin
Memory type	GDDR5	GDDR5
Maximum RAM amount	2x2 GB	2 GB
Display Connectors		1x DVI, 1x HDMI, 2x mini-DisplayPort
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Radeon HD 6990M Crossfire and Radeon HD 7870 XT have maximum RAM of 2 GB.
Radeon HD 6990M Crossfire is used in Laptops, and Radeon HD 7870 XT - in Desktops.
Radeon HD 6990M Crossfire is build with Terascale 2 architecture, and Radeon HD 7870 XT - with GCN 1.0.
Core clock speed of Radeon HD 7870 XT is 210 MHz higher, than Radeon HD 6990M Crossfire.
Radeon HD 6990M Crossfire is manufactured by 40 nm process technology, and Radeon HD 7870 XT - by 28 nm process technology.
Memory clock speed of Radeon HD 7870 XT is 5100 MHz higher, than Radeon HD 6990M Crossfire.

Game benchmarks


high / 1080p	35−40	35−40
ultra / 1080p	21−24	21−24
QHD / 1440p	16−18	16−18
4K / 2160p	10−11	10−11
low / 720p	60−65	60−65
medium / 1080p	40−45	40−45
Radeon HD 6990M Crossfire and Radeon HD 7870 XT have the same average FPS in Assassin's Creed Odyssey.
high / 1080p	55−60	55−60
ultra / 1080p	45−50	45−50
QHD / 1440p	35−40	35−40
4K / 2160p	18−20	18−20
low / 720p	100−110	100−110
medium / 1080p	60−65	60−65
Radeon HD 6990M Crossfire and Radeon HD 7870 XT have the same average FPS in Battlefield 5.
low / 768p	50−55	50−55
QHD / 1440p	0−1	0−1
Radeon HD 6990M Crossfire and Radeon HD 7870 XT have the same average FPS in Call of Duty: Warzone.
low / 768p	250−260	250−260
medium / 768p	220−230	220−230
ultra / 1080p	180−190	180−190
QHD / 1440p	110−120	110−120
4K / 2160p	70−75	70−75
high / 768p	210−220	210−220
Radeon HD 6990M Crossfire and Radeon HD 7870 XT have the same average FPS in Counter-Strike: Global Offensive.
low / 768p	60−65	60−65
medium / 1080p	55−60	55−60
Radeon HD 6990M Crossfire and Radeon HD 7870 XT have the same average FPS in Cyberpunk 2077.
low / 768p	120−130	120−130
medium / 768p	110−120	110−120
ultra / 1080p	100−110	100−110
Radeon HD 6990M Crossfire and Radeon HD 7870 XT have the same average FPS in Dota 2.
high / 1080p	45−50	45−50
ultra / 1080p	40−45	40−45
QHD / 1440p	27−30	27−30
4K / 2160p	14−16	14−16
low / 720p	80−85	80−85
medium / 1080p	45−50	45−50
Radeon HD 6990M Crossfire and Radeon HD 7870 XT have the same average FPS in Far Cry 5.
high / 1080p	60−65	60−65
ultra / 1080p	45−50	45−50
QHD / 1440p	27−30	27−30
4K / 2160p	27−30	27−30
low / 720p	180−190	180−190
medium / 1080p	110−120	110−120
Radeon HD 6990M Crossfire and Radeon HD 7870 XT have the same average FPS in Fortnite.
high / 1080p	60−65	60−65
ultra / 1080p	45−50	45−50
QHD / 1440p	30−35	30−35
4K / 2160p	24−27	24−27
low / 720p	100−110	100−110
medium / 1080p	65−70	65−70
Radeon HD 6990M Crossfire and Radeon HD 7870 XT have the same average FPS in Forza Horizon 4.
low / 768p	140−150	140−150
medium / 768p	120−130	120−130
high / 1080p	70−75	70−75
ultra / 1080p	30−35	30−35
QHD / 1440p	21−24	21−24
Radeon HD 6990M Crossfire and Radeon HD 7870 XT have the same average FPS in Grand Theft Auto V.
high / 1080p	24−27	24−27
ultra / 1080p	20−22	20−22
QHD / 1440p	16−18	16−18
4K / 2160p	8−9	8−9
low / 720p	65−70	65−70
medium / 1080p	30−35	30−35
Radeon HD 6990M Crossfire and Radeon HD 7870 XT have the same average FPS in Metro Exodus.
low / 768p	130−140	130−140
medium / 1080p	120−130	120−130
Radeon HD 6990M Crossfire and Radeon HD 7870 XT have the same average FPS in Minecraft.
ultra / 1080p	14−16	14−16
low / 720p	100−110	100−110
medium / 1080p	18−20	18−20
Radeon HD 6990M Crossfire and Radeon HD 7870 XT have the same average FPS in PLAYERUNKNOWN'S BATTLEGROUNDS.
high / 1080p	24−27	24−27
ultra / 1080p	16−18	16−18
QHD / 1440p	10−11	10−11
4K / 2160p	7−8	7−8
low / 720p	65−70	65−70
medium / 1080p	35−40	35−40
Radeon HD 6990M Crossfire and Radeon HD 7870 XT have the same average FPS in Red Dead Redemption 2.
low / 768p	130−140	130−140
medium / 768p	85−90	85−90
high / 1080p	45−50	45−50
ultra / 1080p	24−27	24−27
4K / 2160p	16−18	16−18
Radeon HD 6990M Crossfire and Radeon HD 7870 XT have the same average FPS in The Witcher 3: Wild Hunt.
low / 768p	90−95	90−95
medium / 768p	60−65	60−65
ultra / 1080p	50−55	50−55
high / 768p	60−65	60−65
Radeon HD 6990M Crossfire and Radeon HD 7870 XT have the same average FPS in World of Tanks.

Full Specs

	Radeon HD 6990M Crossfire	Radeon HD 7870 XT
Architecture	Terascale 2	GCN 1.0
Code name	Blackcomb XTX	Tahiti
Type	Laptop	Desktop
Release date	12 July 2011	19 November 2012
Pipelines	2240	1536
Core clock speed	715 MHz	925 MHz
Boost Clock		975 MHz
Transistor count	2x1700 Million	4,313 million
Manufacturing process technology	40 nm	28 nm
Texture fill rate		93.60
Floating-point performance		2,995 gflops
Length		267 mm
Memory bus width	256 Bit	256 Bit
Memory clock speed	900 MHz	6000 MHz
Memory bandwidth		192.0 GB/s
Shared memory	-
DirectX	DirectX 11, Shader 5.0	12 (11_1)
Shader Model		5.1
OpenGL		4.6
OpenCL		1.2
Vulkan		1.2.131
Bitcoin / BTC (SHA256)		346 Mh/s
Laptop size	large
Ethereum / ETH (DaggerHashimoto)		14.5 Mh/s
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Radeon HD 6990M Crossfire vs Radeon HD 7870 XT

Radeon HD 6990M Crossfire is a Laptop Graphics Card

Main Specs

Game benchmarks

Full Specs

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