Select any two GPUs for comparison

Gaming Performance Comparison

Recommended System Requirements
Game GeForce GTX 770 SLI GeForce GTX 660 Ti 3-way SLI
Halo: Reach 70% 72%
Cyberpunk 2077 31% 20%
Red Dead Redemption 2 5% 12%
Dragon Ball Z Kakarot 41% 46%
Call of Duty: Modern Warfare 5% 12%
Doom Eternal 18% 25%
Microsoft Flight Simulator 31% 20%
Grand Theft Auto VI 46% 34%
FIFA 20 49% 53%
Need For Speed Heat 5% 12%

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GTX 660 Ti 3-way SLI are very slightly better than the Nvidia GeForce GTX 770 SLI.

The GTX 770 has a 131 MHz higher core clock speed than the GTX 660 Ti, but the GTX 660 Ti has 80 more Texture Mapping Units than the GTX 770. As a result, the GTX 660 Ti exhibits a 39.6 GTexel/s better Texture Fill Rate than the GTX 770. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The GTX 770 has a 131 MHz higher core clock speed but 8 fewer Render Output Units than the GTX 660 Ti. The lower ROP count doesn't matter, though, as altogether the GTX 770 manages to provide 1 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 770 was released less than a year after the GTX 660 Ti, and so they are likely to have similar driver support for optimizing performance 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 GTX 660 Ti has 2048 MB more video memory than the GTX 770, so is likely to be much better at displaying game textures at higher resolutions. However, the overall memory performance is about the same.

The GTX 770 has 15.9 GB/sec greater memory bandwidth than the GTX 660 Ti, which means that the memory performance of the GTX 770 is slightly better than the GTX 660 Ti.

The GeForce GTX 770 SLI has 3072 Shader Processing Units and the GeForce GTX 660 Ti 3-way SLI has 4032. However, the actual shader performance of the GTX 770 is 3333 and the actual shader performance of the GTX 660 Ti is 3951. The GTX 660 Ti having 618 better shader performance and an altogether better performance when taking into account other relevant data means that the GTX 660 Ti delivers a slightly smoother and more efficient experience when processing graphical data than the GTX 770.

The GeForce GTX 770 SLI requires 400 Watts to run and the GeForce GTX 660 Ti 3-way SLI requires 450 Watts. We would recommend a PSU with at least 750 Watts for the GTX 770. The GTX 660 Ti requires 50 Watts more than the GTX 770 to run. The difference is significant enough that the GTX 660 Ti may have a slight adverse affect on your yearly electricity bills in comparison to the GTX 770.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed1046 MHzvs915 MHz
Boost Clock1085 MHzvs980 MHz
ArchitectureKepler GK104-425-A2 (x2)Kepler GK104-200-KD-A2 (x3)
OC Potential Poor vs Good
Driver Support Good vs Good
Release Date30 May 2013vs01 Aug 2012
GPU LinkGD LinkGD Link

Resolution Performance

1366x768 - green tick vs green tick -
1600x900 - green tick vs green tick -
green tick vs green tick
2560x1440 - green tick vs green tick -
3840x2160 - green tick vs green tick -

GPU Memory

Memory4096 MBvs6144 MB
Memory Speed1752 MHzvs1502 MHz
Memory Bus512 Bitvs576 Bit
Memory TypeGDDR5vsGDDR5
Memory Bandwidth448.5GB/secvs432.6GB/sec
L2 Cache 1024 KB vs green tick 1152 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%

GPU Display

Shader Processing Units3072vs4032
Actual Shader Performance100%vs100%
Texture Mapping Units256vs336
Texture Rate267.8 GTexel/svs307.4 GTexel/s
Render Output Units64vs72
Pixel Rate66.9 GPixel/svs65.9 GPixel/s

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs4096x2160
VGA Connections0vs0
DVI Connections4vs0
HDMI Connections2vs0
DisplayPort Connections-vs-

GPU Power Requirements

Max Power400 Wattsvs450 Watts
Recommended PSU750 Watts-

GPU Features

Shader Model5.0vs5.0
Open GL4.5vs4.5
Open CL-vs-
Notebook GPUnono

GPU Supporting Hardware

Recommended ProcessorIntel Core i7-4770K 4-Core 3.5GHzvsIntel Core i5-3570K 3.4GHz
Recommended RAM12 GBvs8 GB
Maximum Recommended Gaming Resolution2560x1600vs1920x1080

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewGeForce GTX 770 SLI is a combination of 2 GeForce GTX 770 put together using NVIDIA's SLI technology.
Together, this combination offers 3072 Shader Processing Units, 256 TMUs and 64 ROPs. This, on a 256-bit memory interface, per card, of fast GDDR5. While the central unit runs at 1046MHz and goes up to 1085MHz, in Turbo Mode, the memory clock operates at 1752MHz.
Best case scenario, this combination performs better than dual-graphics GeForce GTX 690 but ultimately, its performance depends on the driver support and on the 3D application.
Therefore, and paired with a powerful processor, all demanding games are playable at the highest settings. Still, this combination might surpass the 450W barrier of TDP and so it will require a very powerful PSU.
GeForce GTX 660 Ti 3-way SLI is a solution of three GeForce GTX 660 Ti put together using NVIDIA'S SLI technology.
Check the page of GeForce GTX 660 Ti 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, is up to X% better than a single GeForce GTX 660 Ti 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 660 Ti. Expect this combination to draw up to 450 Watt though the average power consumption should be slightly lower.
Even the most demanding games will run at the highest settings.
Recommended CPU
Possible GPU Upgrades
GPU Variants