ATI Mobility Radeon HD 3870 X2 vs GeForce GTX 675M

Place in the ranking	634	858
Place by popularity	not in top-100	not in top-100
Power efficiency	3.45	1.41
Architecture	Fermi 2.0 (2010−2014)	TeraScale (2005−2013)
GPU code name	GF114	M88
Market segment	Laptop	Laptop
Release date	22 March 2012 (12 years ago)	1 September 2008 (16 years ago)

Detailed specifications

General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores	384	320
Core clock speed	620 MHz	660 MHz
Number of transistors	1,950 million	666 million
Manufacturing process technology	40 nm	55 nm
Power consumption (TDP)	100 Watt	110 Watt
Texture fill rate	39.68	10.56
Floating-point processing power	0.9523 TFLOPS	0.4224 TFLOPS
ROPs	32	16
TMUs	64	16

Form factor & compatibility

Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).

Laptop size	large	large
Bus support	PCI Express 2.0	no data
Interface	MXM-B (3.0)	PCIe 2.0 x16
SLI options	+	-

VRAM capacity and type

Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.

Memory type	GDDR5	GDDR3
Maximum RAM amount	2 GB	512 MB
Memory bus width	256bit	256 Bit
Memory clock speed	1500 MHz	850 MHz
Memory bandwidth	96.0 GB/s	54.4 GB/s
Shared memory	-	-

Connectivity and outputs

Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.

Display Connectors	No outputs	No outputs
HDMI	+	-
HDCP	+	-
Maximum VGA resolution	Up to 2048x1536	no data

Supported technologies

Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.

Optimus

API compatibility

List of supported 3D and general-purpose computing APIs, including their specific versions.

DirectX	12 API	10.1 (10_1)
Shader Model	5.1	4.1
OpenGL	4.5	3.3
OpenCL	1.1	N/A
Vulkan	N/A	N/A
CUDA	+	-

Synthetic benchmark performance

Non-gaming benchmark results comparison. The combined score is measured on a 0-100 point scale.

Combined synthetic benchmark score

This is our combined benchmark score. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

GTX 675M 5.01
+123%

ATI Mobility HD 3870 X2 2.25

3DMark Vantage Performance

3DMark Vantage is an outdated DirectX 10 benchmark using 1280x1024 screen resolution. It taxes the graphics card with two scenes, one depicting a girl escaping some militarized base located within a sea cave, the other displaying a space fleet attack on a defenseless planet. It was discontinued in April 2017, and Time Spy benchmark is now recommended to be used instead.

GTX 675M 14756
+114%

ATI Mobility HD 3870 X2 6895

Gaming performance

Let's see how good the compared graphics cards are for gaming. Particular gaming benchmark results are measured in FPS.

Average FPS across all PC games

Here are the average frames per second in a large set of popular games across different resolutions:

900p	48 +129%	21−24 −129%
Full HD	48 +129%	21−24 −129%

FPS performance in popular games

Full HD
Low Preset

Counter-Strike 2	12−14 +20%	10−11 −20%
Cyberpunk 2077	10−11 +100%	5−6 −100%
Elden Ring	12−14 +300%	3−4 −300%

Full HD
Medium Preset

Battlefield 5	14−16 +200%	5−6 −200%
Counter-Strike 2	12−14 +20%	10−11 −20%
Cyberpunk 2077	10−11 +100%	5−6 −100%
Forza Horizon 4	21−24 +75%	12−14 −75%
Metro Exodus	12−14 +300%	3−4 −300%
Red Dead Redemption 2	14−16 +66.7%	9−10 −66.7%
Valorant	12−14 +140%	5−6 −140%

Full HD
High Preset

Battlefield 5	14−16 +200%	5−6 −200%
Counter-Strike 2	12−14 +20%	10−11 −20%
Cyberpunk 2077	10−11 +100%	5−6 −100%
Dota 2	16−18 +220%	5−6 −220%
Elden Ring	12−14 +300%	3−4 −300%
Far Cry 5	24−27 +71.4%	14−16 −71.4%
Fortnite	27−30 +142%	12−14 −142%
Forza Horizon 4	21−24 +75%	12−14 −75%
Grand Theft Auto V	16−18 +220%	5−6 −220%
Metro Exodus	12−14 +300%	3−4 −300%
PLAYERUNKNOWN'S BATTLEGROUNDS	40−45 +95.5%	21−24 −95.5%
Red Dead Redemption 2	14−16 +66.7%	9−10 −66.7%
The Witcher 3: Wild Hunt	16−18 +77.8%	9−10 −77.8%
Valorant	12−14 +140%	5−6 −140%
World of Tanks	102 +143%	40−45 −143%

Full HD
Ultra Preset

Battlefield 5	14−16 +200%	5−6 −200%
Counter-Strike 2	12−14 +20%	10−11 −20%
Cyberpunk 2077	10−11 +100%	5−6 −100%
Dota 2	16−18 +220%	5−6 −220%
Far Cry 5	24−27 +71.4%	14−16 −71.4%
Forza Horizon 4	21−24 +75%	12−14 −75%
PLAYERUNKNOWN'S BATTLEGROUNDS	40−45 +95.5%	21−24 −95.5%
Valorant	12−14 +140%	5−6 −140%

1440p
High Preset

Dota 2	4−5 +300%	1−2 −300%
Elden Ring	6−7 +500%	1−2 −500%
Grand Theft Auto V	4−5 +300%	1−2 −300%
PLAYERUNKNOWN'S BATTLEGROUNDS	30−35 +120%	14−16 −120%
Red Dead Redemption 2	4−5 +300%	1−2 −300%
World of Tanks	35−40 +140%	14−16 −140%

1440p
Ultra Preset

Battlefield 5	7−8 +600%	1−2 −600%
Counter-Strike 2	9−10 +0%	9−10 +0%
Cyberpunk 2077	4−5 +33.3%	3−4 −33.3%
Far Cry 5	10−12 +83.3%	6−7 −83.3%
Forza Horizon 4	7−8 +133%	3−4 −133%
Metro Exodus	4−5 +300%	1−2 −300%
The Witcher 3: Wild Hunt	6−7 +100%	3−4 −100%
Valorant	14−16 +75%	8−9 −75%

4K
High Preset

Dota 2	16−18 +6.3%	16−18 −6.3%
Elden Ring	2−3 +100%	1−2 −100%
Grand Theft Auto V	16−18 +6.7%	14−16 −6.7%
Metro Exodus	1−2	0−1
PLAYERUNKNOWN'S BATTLEGROUNDS	14−16 +133%	6−7 −133%
Red Dead Redemption 2	3−4 +200%	1−2 −200%
The Witcher 3: Wild Hunt	16−18 +6.7%	14−16 −6.7%

4K
Ultra Preset

Battlefield 5	4−5 +100%	2−3 −100%
Cyberpunk 2077	2−3 +100%	1−2 −100%
Dota 2	16−18 +6.3%	16−18 −6.3%
Far Cry 5	5−6 +150%	2−3 −150%
Fortnite	4−5 +300%	1−2 −300%
Forza Horizon 4	4−5 +300%	1−2 −300%
Valorant	5−6 +150%	2−3 −150%

This is how GTX 675M and ATI Mobility HD 3870 X2 compete in popular games:

GTX 675M is 129% faster in 900p
GTX 675M is 129% faster in 1080p

Here's the range of performance differences observed across popular games:

in Battlefield 5, with 1440p resolution and the Ultra Preset, the GTX 675M is 600% faster.

All in all, in popular games:

GTX 675M is ahead in 51 test (98%)
there's a draw in 1 test (2%)

Pros & cons summary

Performance score	5.01	2.25
Recency	22 March 2012	1 September 2008
Maximum RAM amount	2 GB	512 MB
Chip lithography	40 nm	55 nm
Power consumption (TDP)	100 Watt	110 Watt

GTX 675M has a 122.7% higher aggregate performance score, an age advantage of 3 years, a 300% higher maximum VRAM amount, a 37.5% more advanced lithography process, and 10% lower power consumption.

The GeForce GTX 675M is our recommended choice as it beats the Mobility Radeon HD 3870 X2 in performance tests.

Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.