Select any two GPUs for comparison
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Gaming Performance Comparison

Recommended System Requirements
Game Radeon R9 M485X 4GB GeForce GTX 675M SLI
Red Dead Redemption 2 75% 98%
Halo: Reach 44% 37%
Cyberpunk 2077 141% 172%
Call of Duty: Modern Warfare 75% 98%
Doom Eternal 51% 70%
Microsoft Flight Simulator 141% 172%
Warcraft 3: Reforged 93% 92%
Grand Theft Auto VI 168% 203%
Star Wars: Jedi - Fallen Order 141% 172%
Dragon Ball Z Kakarot 8% 22%

In terms of overall gaming performance, the graphical capabilities of the AMD Radeon R9 M485X 4GB are very slightly better than the Nvidia GeForce GTX 675M SLI.

The R9 M485X has a 103 MHz higher core clock speed and the same number of Texture Mapping Units as the GTX 675M. This results in the R9 M485X providing 13.1 GTexel/s better texturing performance. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The R9 M485X has a 103 MHz higher core clock speed than the GTX 675M, but the GTX 675M has 32 more Render Output Units than the R9 M485X. As a result, the GTX 675M exhibits a 16.6 GPixel/s better Pixel Fill Rate than the R9 M485X. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The R9 M485X was released over three years more recently than the GTX 675M, and so the R9 M485X is likely to have far better driver support, meaning it will be much more optimized and ultimately superior to the GTX 675M when running the latest games.

Both GPUs exhibit very powerful performance, so it probably isn't worth upgrading from one to the other, as both are capable of running even the most demanding games at the highest settings.

The Radeon R9 M485X 4GB and the GeForce GTX 675M SLI have the same amount of video memory, but are likely to provide slightly different experiences when displaying game textures at high resolutions.

The GTX 675M has 32 GB/sec greater memory bandwidth than the R9 M485X, which means that the memory performance of the GTX 675M is noticeably better than the R9 M485X.

The Radeon R9 M485X 4GB has 2048 Shader Processing Units and the GeForce GTX 675M SLI has 768. However, the actual shader performance of the R9 M485X is 1259 and the actual shader performance of the GTX 675M is 952. The R9 M485X having 307 better shader performance is not particularly notable, as altogether the GTX 675M performs better when taking into account other relevant data.

The R9 M485X transistor size technology is 12 nm (nanometers) smaller than the GTX 675M. This means that the R9 M485X is expected to run slightly cooler and achieve higher clock frequencies than the GTX 675M.

The Radeon R9 M485X 4GB requires 125 Watts to run and the GeForce GTX 675M SLI requires 200 Watts. The GTX 675M requires 75 Watts more than the R9 M485X 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 R9 M485X.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed723 MHzvs620 MHz
Boost Clock-vs-
ArchitectureGCN 1.2 Amethyst XTFermi GF114 (x2)
OC Potential Fair vs None
Driver Support Great vs -
Release Date13 May 2016vs22 Mar 2012
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768
10
green tick vs -
1600x900
9.8
green tick vs
9.3
1920x1080
7.8
green tick vs
7.3
2560x1440
5.7
green tick vs
5.3
3840x2160
4.2
green tick vs -

GPU Memory

Memory4096 MBvs4096 MB
Memory Speed1250 MHzvs750 MHz
Memory Bus256 Bitvs512 Bit
Memory TypeGDDR5vsGDDR5
Memory Bandwidth160GB/secvs192GB/sec
L2 Cache 768 KB green tick vs 0 KB
Delta Color Compression yes vs no
Memory Performance 0% green tick vs green tick 0%
Comparison

GPU Display

Shader Processing Units2048vs768
Actual Shader Performance61%vs46%
Technology28nmvs40nm
Texture Mapping Units128vs128
Texture Rate92.5 GTexel/svs79.4 GTexel/s
Render Output Units32vs64
Pixel Rate23.1 GPixel/svs39.7 GPixel/s
Comparison

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs2560x1600
VGA Connections0vs0
DVI Connections0vs0
HDMI Connections0vs0
DisplayPort Connections0vs-
Comparison

GPU Power Requirements

Max Power125 Wattsvs200 Watts
Recommended PSU--

GPU Features

DirectX12.0vs11
Shader Model5.0vs5.0
Open GL4.5vs4.1
Open CL-vs-
Notebook GPUyesyes
SLI/Crossfireyesvsno
Dedicatedyesvsyes
Comparison

GPU Supporting Hardware

Recommended ProcessorIntel Core i7-6820HQ 4-Core 2.7GHzvsIntel Core i7-3610QM 4-Core 2.3GHz
Recommended RAM8 GBvs8 GB
Maximum Recommended Gaming Resolution1920x1080vs1920x1080

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview
Radeon R9 M485X 4GB is a Performance Mobile Graphics Card based on the second revision of the Graphics Core Next Architecture (CGN).

Architecture
Radeon R9 M485X 4GB Features a GPU Codenamed Amethyst XT which is a Third Gen GCN GPU and is identical to the Tonga XT GPU used on the Desktop Radeon R9 380X.
Amethyst XT has 32 Compute Units Unlocked and thus offers 2048 Shader Processing Units, 128 TMUs and 32 ROPs.

GPU
The Central Unit is Clocked at 723MHz.

Memory: Speed
The GPU is equipped with fast GDDR5 and Accesses the Frame Buffer through a 256-bit Memory Interface. The Memory Clock Operates at 1250MHz.

Memory: Frame Buffer
The GPU can fill up a Memory Pool of up to 4GB. Under most circumstances, this only proves useful in certain 3D Games whose Settings Require Large Amounts of Memory.
However, because the GPU itself is too weak to work under other circumstances in which 4GB of Memory are needed - such as 4K Gaming, a Large Frame Buffer is mostly a Gimmick.

Power Consumption
With a rated board TDP of 125W, it is suited for very large laptops.

Performance
Radeon R9 M485X 4GB is a Direct Rebrand of Radeon R9 M395X 4GB.
Performance is Comparable to the desktop Radeon R9 280. Therefore, even GeForce GTX 970M is still faster.

System Suggestions
Radeon R9 M485X 4GB is best suited for resolutions up to and including 1920x1080. We recommend a Strong Processor and 8GB of RAM for Optimal Performance.
GeForce 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.
Recommended CPU
Possible GPU Upgrades
N/A
N/A
GPU Variants
-
-

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