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Gaming Performance Comparison

In terms of overall gaming performance, the graphical capabilities of the AMD Radeon HD 8870M are significantly better than the Nvidia GeForce GT 740M.

The GeForce GT 740M has a 85 MHz higher core clock speed than the Radeon HD 8870M, but the Radeon HD 8870M has 8 more Texture Mapping Units than the GeForce GT 740M. As a result, the Radeon HD 8870M exhibits a 3.1 GTexel/s better Texture Fill Rate than the GeForce GT 740M. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The GeForce GT 740M has a 85 MHz higher core clock speed than the Radeon HD 8870M and the same number of Render Output Units. This results in the GeForce GT 740M providing 1.4 GPixel/s better pixeling performance. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

Both the Radeon HD 8870M and the GeForce GT 740M were released at the same time, so are likely to be quite similar.

The Radeon HD 8870M and the GeForce GT 740M have the same amount of video memory, but are likely to provide slightly different experiences when displaying game textures at high resolutions.

The Radeon HD 8870M has 43.2 GB/sec greater memory bandwidth than the GeForce GT 740M, which means that the memory performance of the Radeon HD 8870M is noticeably better than the GeForce GT 740M.

The Radeon HD 8870M has 640 Shader Processing Units and the GeForce GT 740M has 384. However, the actual shader performance of the Radeon HD 8870M is 446 and the actual shader performance of the GeForce GT 740M is 311. The Radeon HD 8870M having 135 better shader performance and an altogether better performance when taking into account other relevant data means that the Radeon HD 8870M delivers a noticeably smoother and more efficient experience when processing graphical data than the GeForce GT 740M.

The Radeon HD 8870M requires 50 Watts to run and the GeForce GT 740M requires 33 Watts. The Radeon HD 8870M requires 17 Watts more than the GeForce GT 740M to run. The difference is not significant enough for the Radeon HD 8870M to have a noticeably larger impact on your yearly electricity bills than the GeForce GT 740M.

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GPU Core Details

Core Speed725 MHzvs810 MHz
ArchitectureGCN 1.1 Venus XTKepler GK107
Notebook GPUyesyes
SLI/Crossfireyesvsno
Dedicatedyesvsyes
Release Date01 Apr 201301 Apr 2013
GPU LinkGD LinkGD Link
Approved
Comparison

GPU Memory

Memory2048 MBvs2048 MB
Memory Speed1125 MHzvs900 MHz
Memory Bus128 Bitvs128 Bit
Memory TypeGDDR5vsDDR3
Memory Bandwidth72GB/secvs28.8GB/sec
L2 Cache 256 KB green tick vs green tick 256 KB
Comparison

GPU Display

Shader Processing Units640vs384
Actual Shader Performance446vs311
Technology28nmvs28nm
Texture Mapping Units40vs32
Texture Rate29 GTexel/svs25.9 GTexel/s
Render Output Units16vs16
Pixel Rate11.6 GPixel/svs13 GPixel/s
Comparison

GPU Display Tech

DirectX11.1vs11.1
Shader Model5.0vs5.0
Open GL4.2vs4.3
Max Resolution (WxH)2560x1600vs4096x2160
VGA Connections0vs0
DVI Connections0vs0
HDMI Connections0vs0
Comparison

GPU Power Requirements

Max Power50 Wattsvs33 Watts

GPU Supporting Hardware

Recommended RAM8 GBvs6 GB
Recommended Screen Size1600x9001366x768
Recommended PSU--

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewRadeon HD 8870M is a high-end laptop GFX based on the 28nm, GCN architecture.
It features a GPU codenamed Venus XT, which Stirs from the Cape Verde XT GPU used on desktop Radeon HD 7770. Therefore, it offers 640 Shader Processing Units, 40 TMUs and 16 ROPs. The central unit is initially clocked at 725MHz and can go up to 775MHz in Turbo Mode while the memory clock operates at up to 1125MHz. In terms of Core architecture, it can be addressed as a down-clocked desktop Radeon HD 7770 whose performance is around desktop Radeon HD 7750.
It's by default paired with fast GDDR5 on a 128-bit interface but it seems versions with standard DDR3 are also manufactured and which might become a bottleneck to both the GPU and frame buffer.
Benchmarks indicate, that using a 720p resolution, extremely demanding modern games such as Crysis 3 and Far Cry 3 are playable at medium settings, while modern demanding games are playable with fluent frame rates at the high settings.
GeForce GT 740M is a middle-class mobile graphics card based on the 28nm, Kepler architecture.
It's based on the Kepler GK107 Core and offers 384 Shader Processing Units, 32 TMUs and 16 ROPs, on a 128-bit memory interface of DDR3. The central unit runs at 810MHz (890MHz in Turbo Mode) and the memory clock operates at up to 900MHz.
Its performance is therefore similar (though slower) to the DDR3 Variant of previous GeForce GT 650M and so most modern games will run at medium or high settings. Its power consumption should be lower, thanks to the power optimizations.
This Graphics Card needs to be paired with an average Quad Core CPU and can only achieve fluent frame rates at 1366x768.
Recommended CPUIntel Core i3-M390 2.67GHz
Intel Core i3-4005U 1.7GHz
Intel Pentium Dual Core 2020M 2.4GHz
AMD APU A8-3520M Quad-Core
Intel Core i5-4202Y 1.6GHz
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Possible GPU Upgrades--
GPU Variants-GeForce GT 740M 64-bit Edition