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Gaming Performance Comparison

Recommended System Requirements
Game GeForce GTX 660 v2 Radeon HD 5850 XFX Black 1GB Edition
Halo: Reach 31% 6%
Cyberpunk 2077 197% 308%
Red Dead Redemption 2 116% 197%
Dragon Ball Z Kakarot 33% 83%
Call of Duty: Modern Warfare 116% 197%
Doom Eternal 86% 155%
Microsoft Flight Simulator 197% 308%
Grand Theft Auto VI 230% 354%
FIFA 20 15% 58%
Need For Speed Heat 116% 197%

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GTX 660 v2 are significantly better than the AMD Radeon HD 5850 XFX Black 1GB Edition.

The GTX 660 has a 228 MHz higher core clock speed and 8 more Texture Mapping Units than the HD 5850. This results in the GTX 660 providing 24.3 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 660 has a 228 MHz higher core clock speed than the HD 5850, but the HD 5850 has 8 more Render Output Units than the GTX 660. As a result, the HD 5850 exhibits a 0.7 GPixel/s better Pixel Fill Rate than the GTX 660. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The GTX 660 was released over three years more recently than the HD 5850, and so the GTX 660 is likely to have far better driver support, meaning it will be much more optimized and ultimately superior to the HD 5850 when running the latest games.

The GTX 660 has 1024 MB more video memory than the HD 5850, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the GTX 660 also has superior memory performance overall.

The GTX 660 has 0.2 GB/sec greater memory bandwidth than the HD 5850, which means that the memory performance of the GTX 660 is marginally better than the HD 5850.

The GeForce GTX 660 v2 has 960 Shader Processing Units and the Radeon HD 5850 XFX Black 1GB Edition has 1440. However, the actual shader performance of the GTX 660 is 1016 and the actual shader performance of the HD 5850 is 551. The GTX 660 having 465 better shader performance and an altogether better performance when taking into account other relevant data means that the GTX 660 delivers a noticeably smoother and more efficient experience when processing graphical data than the HD 5850.

The GTX 660 transistor size technology is 12 nm (nanometers) smaller than the HD 5850. This means that the GTX 660 is expected to run slightly cooler and achieve higher clock frequencies than the HD 5850.

The GeForce GTX 660 v2 requires 140 Watts to run and the Radeon HD 5850 XFX Black 1GB Edition requires 151 Watts. We would recommend a PSU with at least 450 Watts for the GTX 660 and a PSU with at least 500 Watts for the HD 5850. The HD 5850 requires 11 Watts more than the GTX 660 to run. The difference is not significant enough for the HD 5850 to have a noticeably larger impact on your yearly electricity bills than the GTX 660.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed993 MHzvs765 MHz
Boost Clock1058 MHzvs-
ArchitectureKepler GK106-450-A1Terascale 2 Cypress PRO
OC Potential Good vs Poor
Driver Support Good vs Poor
Release Date13 Sep 2014vs13 Apr 2010
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768
10
green tick vs -
1600x900
8.9
green tick vs
7.6
1920x1080
7
green tick vs
6
2560x1440
5.1
green tick vs
4.1
3840x2160
3.4
green tick vs -

GPU Memory

Memory2048 MBvs1024 MB
Memory Speed1502 MHzvs1125 MHz
Memory Bus192 Bitvs256 Bit
Memory TypeGDDR5vsGDDR5
Memory Bandwidth144.2GB/secvs144GB/sec
L2 Cache 384 KB vs green tick 512 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%
Comparison

GPU Display

Shader Processing Units960vs1440
Actual Shader Performance49%vs27%
Technology28nmvs40nm
Texture Mapping Units80vs72
Texture Rate79.4 GTexel/svs55.1 GTexel/s
Render Output Units24vs32
Pixel Rate23.8 GPixel/svs24.5 GPixel/s
Comparison

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs2560x1600
VGA Connections0vs0
DVI Connections2vs2
HDMI Connections1vs1
DisplayPort Connections1vs-
Comparison

GPU Power Requirements

Max Power140 Wattsvs151 Watts
Recommended PSU450 Watts & 33 Ampsvs500 Watts & 40 Amps

GPU Features

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

GPU Supporting Hardware

Recommended ProcessorIntel Core i5-4670 3.4GHzvsIntel Core i7-860 Quad 2.80GHz
Recommended RAM8 GBvs8 GB
Maximum Recommended Gaming Resolution1920x1080vs1920x1080

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview
GeForce GTX 660 v2 is a Performance Graphics Card based on the Kepler Architecture.

Architecture
The Kepler Architecture was NVIDIA's big step to power efficiency. Each Stream Multiprocessor (SMX) now hosts 192 Shader Processing Units - against the 48 of older Fermi Architecture, and has been redesigned being now clocked at the same speed of the Central Unit. This means they are more energy efficient and will consequently lead to cooler operating temperatures. However, it also means they are weaker. It can be said that one Fermi SMX is as fast as 2 Kepler SMXs.
Additionally, and not available in all GPUs, Kepler also introduced the Boost Clock Feature. The Boost Clock is an even higher Clock Speed activated when in gaming mode and becomes the effective speed of the GPU. GPU
It equips a GPU GK106-450-A1 which has 5 Stream Multiprocessors activated and thus offers 960 Shader Processing Units, 80 TMUs and 24 ROPs. The Central Unit is initially clocked at 993MHz and goes up to 1058MHz, in Turbo Mode.

Memory
The GPU accesses a 2GB frame buffer of fast GDDR5, through a 192-bit memory interface. The size of the frame buffer is adequate. The Memory Clock Operates at 1502MHz.

Power Consumption
With a rated board TDP of 140W, it requires at least a 450W PSU with one available 6-pin connector.

Performance
GeForce GTX 660 v2 is only very slightly faster than GeForce GTX 660.

System Suggestions
GeForce GTX 660 v2 is best suited for resolutions up to and including 1920x1080. We recommend a Strong Processor and 8GB of RAM for Optimal Performance.
Overview
Radeon HD 5850 XFX Black 1GB Edition is a special edition of AMD's High-End Radeon HD 5850 1GB, created by XFX.

Overclock Out of The Box
The Central Unit now runs at 765MHz, instead of 725MHz while the Memory Clock is now of 1125MHz.

Cooling Solution
The Cooling System has been replaced by XFX's custom-designed Thermal Design, meaning the Graphics Card runs cooler under load.

Performance
Benchmarks indicate a 6% performance over the reference Radeon HD 5850 1GB.
Recommended CPU
Possible GPU Upgrades
GPU Variants
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