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5
Select any two GPUs for comparison
VS

Gaming Performance Comparison

Recommended System Requirements
Game GeForce RTX 2080 Ti SLI GeForce GTX 660 Ti WindForce 2X OC Edition
Borderlands 3 72% 89%
Call of Duty: Modern Warfare 64% 146%
Cyberpunk 2077 64% 146%
Need For Speed Heat 74% 79%
eFootball PES 2020 82% 22%
Remnant: From the Ashes 75% 67%
FIFA 20 86% 5%
Grand Theft Auto VI 60% 173%
Red Dead Redemption 2 64% 146%
Wolfenstein: Youngblood 75% 69%

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce RTX 2080 Ti SLI are massively better than the Nvidia GeForce GTX 660 Ti WindForce 2X OC Edition.

The RTX 2080 Ti has a 318 MHz higher core clock speed and 160 more Texture Mapping Units than the GTX 660 Ti. This results in the RTX 2080 Ti providing 251.6 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 RTX 2080 Ti has a 318 MHz higher core clock speed and 64 more Render Output Units than the GTX 660 Ti. This results in the RTX 2080 Ti providing 94 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 RTX 2080 Ti was released over three years more recently than the GTX 660 Ti, and so the RTX 2080 Ti is likely to have far better driver support, meaning it will be much more optimized and ultimately superior to the GTX 660 Ti 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 RTX 2080 Ti has 9216 MB more video memory than the GTX 660 Ti, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the RTX 2080 Ti also has superior memory performance overall.

The RTX 2080 Ti has 471.8 GB/sec greater memory bandwidth than the GTX 660 Ti, which means that the memory performance of the RTX 2080 Ti is massively better than the GTX 660 Ti.

The GeForce RTX 2080 Ti SLI has 4352 Shader Processing Units and the GeForce GTX 660 Ti WindForce 2X OC Edition has 1344. However, the actual shader performance of the RTX 2080 Ti is 7116 and the actual shader performance of the GTX 660 Ti is 1492. The RTX 2080 Ti having 5624 better shader performance and an altogether better performance when taking into account other relevant data means that the RTX 2080 Ti delivers a massively smoother and more efficient experience when processing graphical data than the GTX 660 Ti.

The RTX 2080 Ti transistor size technology is 16 nm (nanometers) smaller than the GTX 660 Ti. This means that the RTX 2080 Ti is expected to run slightly cooler and achieve higher clock frequencies than the GTX 660 Ti.

The GeForce RTX 2080 Ti SLI requires 260 Watts to run and the GeForce GTX 660 Ti WindForce 2X OC Edition requires 150 Watts. We would recommend a PSU with at least 650 Watts for the RTX 2080 Ti and a PSU with at least 450 Watts for the GTX 660 Ti. The RTX 2080 Ti requires 110 Watts more than the GTX 660 Ti to run. The difference is significant enough that the RTX 2080 Ti may have an adverse affect on your yearly electricity bills in comparison to the GTX 660 Ti.

GPU Architecture

Core Speed1350 MHzvs1032 MHz
Boost Clock1635 MHzvs1110 MHz
ArchitectureTuring TU102-300A-K1-A1Kepler GK104-300-KD-A2
OC Potential - vs Poor
Driver Support - vs Good
Release Date20 Sep 2018vs16 Aug 2012
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768
10
green tick vs green tick
10
1600x900
10
green tick vs
9.8
1920x1080
10
green tick vs
7.8
2560x1440
10
green tick vs
5.6
3840x2160
10
green tick vs
4

GPU Memory

Memory11264 MBvs2048 MB
Memory Speed1750 MHzvs1502 MHz
Memory Bus352 Bitvs192 Bit
Memory TypeGDDR6vsGDDR5
Memory Bandwidth616GB/secvs144.2GB/sec
L2 Cache 6144 KB green tick vs 384 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%
Comparison

GPU Display

Shader Processing Units4352vs1344
Actual Shader Performance100%vs72%
Technology12nmvs28nm
Texture Mapping Units272vs112
Texture Rate367.2 GTexel/svs115.6 GTexel/s
Render Output Units88vs24
Pixel Rate118.8 GPixel/svs24.8 GPixel/s
Comparison

GPU Outputs

Max Digital Resolution (WxH)7680x4320vs4096x2160
VGA Connections0vs0
DVI Connections0vs2
HDMI Connections1vs1
DisplayPort Connections3vs1
Comparison

GPU Power Requirements

Max Power260 Wattsvs150 Watts
Recommended PSU650 Wattsvs450 Watts & 33 Amps

GPU Features

DirectX12.1vs12.0
Shader Model-vs5.0
Open GL-vs4.5
Open CL-vs-
Notebook GPUnono
SLI/Crossfirenovsyes
Dedicatedyesvsyes
Comparison

GPU Supporting Hardware

Recommended ProcessorIntel Core i7-8700K 6-Core 3.7GHzvsIntel Core i5-3570K 3.4GHz
Recommended RAM16 GBvs8 GB
Maximum Recommended Gaming Resolution3840x2160vs1920x1080

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview GeForce RTX 2080 Ti is the top RTX 20 Series graphics card and considered an Enthusiast graphics card based on the Turing architecture. Architecture The Turing architecture represents a process shrink down to 12nm compared to 14nm Pascal. The Turing architecture provides the world's first consumer support for real-time ray-tracing technology, or RTX. GPU It equips a GPU Codenamed TU102 which has 4352 Shader Processing Units, 272 TMUs and 88 ROPs. The central unit runs at 1350MHz and goes up to 1545MHz in Boost mode. It also has 544 Tensor Cores for AI purposes. Memory The GPU accesses an 11GB frame buffer of first-gen GDDR6 memory through a 352-bit memory interface, while the Memory clock operates at 1750MHz, or 14GHz effective. Power Consumption With a rated board TDP of 285W, it requires at least a 650W PSU with two 8-pin power connectors. System Suggestions GeForce RTX 2080 Ti is best suited for resolutions up to and including 3840x2160. We recommend a top-End Processor and at least 16GB of RAM for optimal performance.Overview
GeForce GTX 660 Ti Gigabyte WindForce 2X OC 2GB Edition is a special edition of NVIDIA's Performance GeForce GTX 660 Ti, created by Gigabyte.

Overclock: Central Unit
The Central Unit now runs at 1032MHz, instead of 915MHz and goes up to 1110MHz, in Turbo Mode.

Overclock: Memory Clock
The Operating Memory Clock and the Frame Buffer remain the same.

Cooling Solution
The reference NVIDIA Single-Fan Cooling System has been replaced by Gigabyte's WINDFORCE 2X 100mm Fansink equipped with "Triangle Cool" Technology to reach a better cooling performance. The latest patent pending technology combines fin with clip module in a special triangle shape. With the original anti-turbulence structure plus the new triangle cooling design, it enhances the efficiency of heat dissipation dramatically by minimizing the flow of turbulence between fans.

Performance
Benchmarks indicate a 5% performance over the reference GeForce GTX 660 Ti.
Recommended CPU
-
Possible GPU Upgrades
-
GPU Variants
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