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Gaming Performance Comparison

Recommended System Requirements
Game GeForce GTX 675M SLI Radeon HD 6870M
Halo: Reach 37% 116%
Cyberpunk 2077 172% 836%
Dragon Ball Z Kakarot 22% 320%
Red Dead Redemption 2 98% 581%
Call of Duty: Modern Warfare 98% 581%
Microsoft Flight Simulator 172% 836%
Doom Eternal 70% 486%
Grand Theft Auto VI 203% 941%
FIFA 20 6% 263%
Need For Speed Heat 98% 581%

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GTX 675M SLI are massively better than the AMD Radeon HD 6870M.

The Radeon HD 6870M has a 55 MHz higher core clock speed than the GTX 675M, but the GTX 675M has 88 more Texture Mapping Units than the Radeon HD 6870M. As a result, the GTX 675M exhibits a 52.4 GTexel/s better Texture Fill Rate than the Radeon HD 6870M. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The Radeon HD 6870M has a 55 MHz higher core clock speed than the GTX 675M, but the GTX 675M has 48 more Render Output Units than the Radeon HD 6870M. As a result, the GTX 675M exhibits a 28.9 GPixel/s better Pixel Fill Rate than the Radeon HD 6870M. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The GTX 675M was released over a year more recently than the Radeon HD 6870M, and so the GTX 675M is likely to have better driver support, meaning it will be more optimized for running the latest games when compared to the Radeon HD 6870M.

The GTX 675M has 3072 MB more video memory than the Radeon HD 6870M, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the GTX 675M also has superior memory performance overall.

The GTX 675M has 128 GB/sec greater memory bandwidth than the Radeon HD 6870M, which means that the memory performance of the GTX 675M is massively better than the Radeon HD 6870M.

The GeForce GTX 675M SLI has 768 Shader Processing Units and the Radeon HD 6870M has 800. However, the actual shader performance of the GTX 675M is 952 and the actual shader performance of the Radeon HD 6870M is 270. The GTX 675M having 682 better shader performance and an altogether better performance when taking into account other relevant data means that the GTX 675M delivers a massively smoother and more efficient experience when processing graphical data than the Radeon HD 6870M.

The GeForce GTX 675M SLI requires 200 Watts to run and the Radeon HD 6870M requires 50 Watts. The GTX 675M requires 150 Watts more than the Radeon HD 6870M to run. The difference is significant enough that the GTX 675M may have an adverse affect on your yearly electricity bills in comparison to the Radeon HD 6870M.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed620 MHzvs675 MHz
Boost Clock-vs-
ArchitectureFermi GF114 (x2)Terascale 2 Granville XT
OC Potential None vs Poor
Driver Support - vs Poor
Release Date22 Mar 2012vs04 Jan 2011
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768 - green tick vs green tick -
1600x900
9.3
green tick vs -
1920x1080
7.3
green tick vs -
2560x1440
5.3
green tick vs -
3840x2160 - green tick vs green tick -

GPU Memory

Memory4096 MBvs1024 MB
Memory Speed750 MHzvs1000 MHz
Memory Bus512 Bitvs128 Bit
Memory TypeGDDR5vsGDDR5
Memory Bandwidth192GB/secvs64GB/sec
L2 Cache 0 KB vs green tick 256 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%
Comparison

GPU Display

Shader Processing Units768vs800
Actual Shader Performance46%vs13%
Technology40nmvs40nm
Texture Mapping Units128vs40
Texture Rate79.4 GTexel/svs27 GTexel/s
Render Output Units64vs16
Pixel Rate39.7 GPixel/svs10.8 GPixel/s
Comparison

GPU Outputs

Max Digital Resolution (WxH)2560x1600vs2560x1600
VGA Connections0vs1
DVI Connections0vs2
HDMI Connections0vs1
DisplayPort Connections-vs-
Comparison

GPU Power Requirements

Max Power200 Wattsvs50 Watts
Recommended PSU--

GPU Features

DirectX11vs11.0
Shader Model5.0vs5.0
Open GL4.1vs4.3
Open CL-vs-
Notebook GPUyesyes
SLI/Crossfirenovsyes
Dedicatedyesvsyes
Comparison

GPU Supporting Hardware

Recommended ProcessorIntel Core i7-3610QM 4-Core 2.3GHzvsIntel Core i7-2617M 2-Core 1.5GHz
Recommended RAM8 GBvs6 GB
Maximum Recommended Gaming Resolution1920x1080vs1600x900

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewGeForce GTX 675M SLI is a solution of two GeForce GTX 675M put together using NVIDIA'S SLI technology.
Check the page of GeForce GTX 675M to know more about its chip.
As usual, SLI relies a lot on proper driver support and may suffer from micro-stuttering in lower frame rates (below 30). Benchmarks indicate the performance is overall, about 35% better than a single GeForce GTX 675M performing by itself but at times (depending whether or not the 3D game supports SLI or in the graphics driver) it performed worse than a single GeForce GTX 675M.
Even the most demanding games will run at the highest settings.
Radeon HD 6870M is a high-end GPU based on the 40nm Terrascale 2 architecture.
It's based on the Juniper Core (therefore related to Radeon HD 6770) and offers 800 Shader Processing Units, 40 TMUs and 16 ROPs on a 128-bit memory interface of fast GDDR5. Its central clock runs at 675MHz and the memory clock operates at 1000MHz.
Despite being based on the same Core used on Radeon HD 6770, its performance is more comparable to Radeon HD 6750 due to being heavily underclocked.
Using a 720p resolution, most of today's games are playable at high settings but some will require further reduced settings to be played optimally.
Recommended CPU
Possible GPU Upgrades
N/A
N/A
GPU Variants
-
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