Select any two GPUs for comparison
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Gaming Performance Comparison

Recommended System Requirements
Game GeForce GTX 980 4GB SLI Radeon HD 6770M 2GB
Cyberpunk 2077 31% 861%
Assassins Creed: Valhalla 36% 786%
Watch Dogs Legion 33% 835%
Genshin Impact 30% 869%
FIFA 21 65% 389%
Call of Duty: Black Ops Cold War 29% 886%
eFootball PES 2021 65% 389%
Microsoft Flight Simulator 38% 758%
Marvel's Avengers 34% 818%
Mafia: Definitive Edition 0% 1289%

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GTX 980 4GB SLI are massively better than the AMD Radeon HD 6770M 2GB.

The GTX 980 has a 401 MHz higher core clock speed and 232 more Texture Mapping Units than the HD 6770M. This results in the GTX 980 providing 270.9 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 GTX 980 has a 401 MHz higher core clock speed and 120 more Render Output Units than the HD 6770M. This results in the GTX 980 providing 138.3 GPixel/s better pixeling performance. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The GTX 980 was released over three years more recently than the HD 6770M, and so the GTX 980 is likely to have far better driver support, meaning it will be much more optimized and ultimately superior to the HD 6770M when running the latest games.

The GTX 980 has 6144 MB more video memory than the HD 6770M, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the GTX 980 also has superior memory performance overall.

The GTX 980 has 397.6 GB/sec greater memory bandwidth than the HD 6770M, which means that the memory performance of the GTX 980 is massively better than the HD 6770M.

The GeForce GTX 980 4GB SLI has 4096 Shader Processing Units and the Radeon HD 6770M 2GB has 480. However, the actual shader performance of the GTX 980 is 6724 and the actual shader performance of the HD 6770M is 174. The GTX 980 having 6550 better shader performance and an altogether better performance when taking into account other relevant data means that the GTX 980 delivers a massively smoother and more efficient experience when processing graphical data than the HD 6770M.

The GTX 980 transistor size technology is 12 nm (nanometers) smaller than the HD 6770M. This means that the GTX 980 is expected to run slightly cooler and achieve higher clock frequencies than the HD 6770M.

The GeForce GTX 980 4GB SLI requires 350 Watts to run and the Radeon HD 6770M 2GB requires 35 Watts. We would recommend a PSU with at least 750 Watts for the GTX 980. The GTX 980 requires 315 Watts more than the HD 6770M to run. The difference is significant enough that the GTX 980 may have an adverse affect on your yearly electricity bills in comparison to the HD 6770M.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed1126 MHzvs725 MHz
Boost Clock1216 MHzvs-
ArchitectureMaxwell GM204-400-A1 (x2)Terascale 2 Whistler XT
OC Potential Fair vs Poor
Driver Support Great vs Poor
Release Date19 Sep 2014vs01 Jan 2011
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768 - green tick vs green tick -
1600x900
10
green tick vs -
1920x1080
10
green tick vs -
2560x1440
9.9
green tick vs -
3840x2160
7.8
green tick vs -

GPU Memory

Memory8192 MBvs2048 MB
Memory Speed1753 MHzvs800 MHz
Memory Bus512 Bitvs128 Bit
Memory TypeGDDR5vsGDDR5
Memory Bandwidth448.8GB/secvs51.2GB/sec
L2 Cache 4096 KB green tick vs 256 KB
Delta Color Compression yes vs no
Memory Performance 0% green tick vs green tick 0%
Comparison

GPU Display

Shader Processing Units4096vs480
Actual Shader Performance100%vs8%
Technology28nmvs40nm
Texture Mapping Units256vs24
Texture Rate288.3 GTexel/svs17.4 GTexel/s
Render Output Units128vs8
Pixel Rate144.1 GPixel/svs5.8 GPixel/s
Comparison

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs2560x1600
VGA Connections0vs0
DVI Connections1vs0
HDMI Connections1vs0
DisplayPort Connections-vs-
Comparison

GPU Power Requirements

Max Power350 Wattsvs35 Watts
Recommended PSU750 Watts & 42 Amps-

GPU Features

DirectX12.1vs11.0
Shader Model5.0vs5.0
Open GL4.5vs4.3
Open CL-vs-
Notebook GPUnoyes
SLI/Crossfirenovsyes
Dedicatedyesvsyes
Comparison

GPU Supporting Hardware

Recommended ProcessorIntel Core i7-5820K 6-Core 3.3GHzvsIntel Core i5-2410M 2.3GHz
Recommended RAM16 GBvs6 GB
Maximum Recommended Gaming Resolution5760x1080vs1440x900

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview
GeForce GTX 980 4GB SLI is a solution of two GeForce GTX 980 4GB put together using NVIDIA's SLI technology.

Architecture
The Second variant of the Maxwell Architecture, despite being also manufactured with a 28nm technology, has an extremely large L2 Cache and features a Third Generation Delta Color Compression which allows NVIDIA to produce Graphics Cards with relatively small memory data transfer rates, without causing too much impact on the overall performance. Furthermore, the Shaders have been redesigned and are both more powerful and energy efficient.

GPU
It consists of 2 GPUs codenamed GM204-400-A1 which, together, offer 4096 Shader Processing Units, 256 TMUs and 128 ROPs, on a 512-bit memory interface of fast GDDR5. The central unit runs at 1126MHz and goes up to 1216MHz, in Turbo Mode, while the memory clock operates at 1753MHz.

Power Consumption
Power Consumption lies between 300W and 400W.

Performance
Gaming benchmarks prove that at 4K (3840x2160) GeForce GTX 980 4GB SLI is over 7% faster than AMD's Radeon R9 295X2.

System Suggestions
We recommend a very strong processor (Intel Core i7 Six Core/AMD FX Eight Core) and 16GB of RAM for a system with GeForce GTX 980 4GB SLI.
Radeon HD 6770M 2GB is a variant of fast-middle-class Radeon HD 6770M that features a 2GB frame buffer. Check its page to know more about its performance.
This GPU does not benefit from a 2GB frame buffer and so its performance is exactly like the 1GB version.
Recommended CPU
Possible GPU Upgrades
-
N/A
GPU Variants
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-