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Gaming Performance Comparison

Recommended System Requirements
Game GeForce GTX 670 PNY 2GB Edition Radeon HD 7770 1GB GDDR5
Red Dead Redemption 2 65% 296%
Cyberpunk 2077 126% 444%
Dragon Ball Z Kakarot 2% 144%
Microsoft Flight Simulator 126% 444%
Call of Duty: Modern Warfare 65% 296%
Doom Eternal 42% 241%
FIFA 20 12% 111%
Grand Theft Auto VI 152% 506%
Need For Speed Heat 65% 296%
Halo: Reach 48% 26%

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GTX 670 PNY 2GB Edition are massively better than the AMD Radeon HD 7770 1GB GDDR5.

The HD 7770 has a 85 MHz higher core clock speed than the GTX 670, but the GTX 670 has 72 more Texture Mapping Units than the HD 7770. As a result, the GTX 670 exhibits a 62.5 GTexel/s better Texture Fill Rate than the HD 7770. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The HD 7770 has a 85 MHz higher core clock speed than the GTX 670, but the GTX 670 has 16 more Render Output Units than the HD 7770. As a result, the GTX 670 exhibits a 13.3 GPixel/s better Pixel Fill Rate than the HD 7770. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The GTX 670 was released less than a year after the HD 7770, and so they are likely to have similar driver support for optimizing performance when running the latest games.

The GTX 670 has 1024 MB more video memory than the HD 7770, so is likely to be much better at displaying game textures at higher resolutions. This is supported by the fact that the GTX 670 also has superior memory performance overall.

The GTX 670 has 120.3 GB/sec greater memory bandwidth than the HD 7770, which means that the memory performance of the GTX 670 is massively better than the HD 7770.

The GeForce GTX 670 PNY 2GB Edition has 1344 Shader Processing Units and the Radeon HD 7770 1GB GDDR5 has 640. However, the actual shader performance of the GTX 670 is 1317 and the actual shader performance of the HD 7770 is 544. The GTX 670 having 773 better shader performance and an altogether better performance when taking into account other relevant data means that the GTX 670 delivers a massively smoother and more efficient experience when processing graphical data than the HD 7770.

The GeForce GTX 670 PNY 2GB Edition requires 170 Watts to run and the Radeon HD 7770 1GB GDDR5 requires 80 Watts. We would recommend a PSU with at least 500 Watts for the GTX 670 and a PSU with at least 450 Watts for the HD 7770. The GTX 670 requires 90 Watts more than the HD 7770 to run. The difference is significant enough that the GTX 670 may have an adverse affect on your yearly electricity bills in comparison to the HD 7770.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed915 MHzvs1000 MHz
Boost Clock980 MHzvs-
ArchitectureKepler GK104-325-A2GCN 1.0 Cape Verde XT
OC Potential Good vs Fair
Driver Support Good vs Good
Release Date01 May 2012vs15 Feb 2012
GPU LinkGD LinkGD Link

Resolution Performance

1366x768 - vs green tick
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GPU Memory

Memory2048 MBvs1024 MB
Memory Speed1502 MHzvs1125 MHz
Memory Bus256 Bitvs128 Bit
Memory TypeGDDR5vsGDDR5
Memory Bandwidth192.3GB/secvs72GB/sec
L2 Cache 512 KB green tick vs green tick 512 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%

GPU Display

Shader Processing Units1344vs640
Actual Shader Performance63%vs26%
Texture Mapping Units112vs40
Texture Rate102.5 GTexel/svs40 GTexel/s
Render Output Units32vs16
Pixel Rate29.3 GPixel/svs16 GPixel/s

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs4096x2160
VGA Connections0vs0
DVI Connections2vs1
HDMI Connections1vs1
DisplayPort Connections-vs-

GPU Power Requirements

Max Power170 Wattsvs80 Watts
Recommended PSU500 Watts & 30 Ampsvs450 Watts & 30 Amps

GPU Features

Shader Model5.0vs5.0
Open GL4.5vs4.4
Open CL-vs-
Notebook GPUnono

GPU Supporting Hardware

Recommended ProcessorIntel Core i5-3570K 3.4GHzvsIntel Core i3-3240 3.4GHz
Recommended RAM8 GBvs8 GB
Maximum Recommended Gaming Resolution1920x1080vs1600x900

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewGeForce GTX 670 PNY 2GB Edition is a renamed GeForce GTX 670 with no new features - not even a new cooling system. Its performance is exactly like the reference card.Overview
Radeon HD 7770 is a Fast-Middle-Class Graphics Card based on the First Revision of the Graphics Core Next (GCN) Architecture.

The GCN Architecture succeeds the 40nm Terascale Architecture. In addition to being produced with a 28nm Technology, the GCN Architecture adds other Technologies that allow for energy efficiency. For example, ZeroCore Power, a long idle power saving technology, allows the Graphics Cards to shut down by itself when the Monitor is turned off.
GCN also adds Improved Anisotropic Filtering, DirectX 11 Tessellation and the Partially Resident Textures (PRT) Technology, which enables future games to utilize ultra-high resolution textures with the same performance as today's small and often repetitive textures.

It equips a GPU Codenamed Cape Verde XT which has 10 Compute Units activated and thus offers 640 Shader Processing Units, 40 TMUs and 16 ROPs. The Central Unit is clocked at 1000MHz.

The GPU accesses a 1GB frame buffer of fast GDDR5, through a 256-bit memory interface. The size of the frame buffer is adequate. The Memory Clock Operates at 1125MHz.

Power Consumption
With a rated board TDP of 80W, it requires at least a 450W PSU with one available 6-pin connectors.

Radeon HD 7770 competes with GeForce GTX 650 Ti but its performance was slightly behind it.

System Suggestions
Radeon HD 7770 is best suited for resolutions up to and including 1600x900. We recommend a Decent Processor (Intel Core i3 Quad Core/AMD FX Quad Core) and 8GB of RAM for Optimal Performance.
Recommended CPU
Possible GPU Upgrades
GPU Variants