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Gaming Performance Comparison

Recommended System Requirements
Game Radeon HD 7770 XFX Double Dissipation 1GB Edition Radeon R7 250X
Red Dead Redemption 2 296% 312%
Cyberpunk 2077 444% 465%
Dragon Ball Z Kakarot 144% 154%
Microsoft Flight Simulator 444% 465%
Call of Duty: Modern Warfare 296% 312%
Doom Eternal 241% 254%
FIFA 20 111% 119%
Grand Theft Auto VI 506% 529%
Need For Speed Heat 296% 312%
Halo: Reach 26% 31%

In terms of overall gaming performance, the graphical capabilities of the AMD Radeon HD 7770 XFX Double Dissipation 1GB Edition are marginally better than the AMD Radeon R7 250X.

The HD 7770 has a 50 MHz higher core clock speed and the same number of Texture Mapping Units as the Radeon R7 250X. This results in the HD 7770 providing 2 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 HD 7770 has a 50 MHz higher core clock speed than the Radeon R7 250X and the same number of Render Output Units. This results in the HD 7770 providing 0.8 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 Radeon R7 250X was released over a year more recently than the HD 7770, and so the Radeon R7 250X is likely to have better driver support, meaning it will be more optimized for running the latest games when compared to the HD 7770.

The Radeon R7 250X 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 Radeon R7 250X also has superior memory performance overall.

The memory bandwidth of the Radeon HD 7770 XFX Double Dissipation 1GB Edition and the Radeon R7 250X are the same, which means the HD 7770 and the Radeon R7 250X have equal limitations when it comes to graphical data transfer.

Both the Radeon HD 7770 XFX Double Dissipation 1GB Edition and the Radeon R7 250X have 640 Shader Processing Units. Having the same number of SPUs and using the same architecture means that the performance they offer can be compared by looking at the memory bandwidth, Texture and Pixel Rates. In this case, the HD 7770 has 2 GTexel/s better Texture Fill Rate and 0.8 GPixel/s better Pixel Fill Rate, but the has GB/sec greater memory bandwidth. Although the GPUs are very similar in performance, the HD 7770 takes the edge.

The Radeon HD 7770 XFX Double Dissipation 1GB Edition requires 80 Watts to run and the Radeon R7 250X requires 80 Watts. We would recommend a PSU with at least 450 Watts for the HD 7770 and a PSU with at least 450 Watts for the Radeon R7 250X. The two GPUs require the same amount of wattage to run. As such, there is no need to worry about which will more significantly affect your yearly electricity bills.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed1000 MHzvs950 MHz
Boost Clock-vs-
ArchitectureGCN 1.0 Cape Verde XTGCN 1.0 Cape Verde XT
OC Potential Fair vs Fair
Driver Support Good vs Good
Release Date31 Mar 2012vs10 Feb 2014
GPU LinkGD LinkGD Link

Resolution Performance

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GPU Memory

Memory1024 MBvs2048 MB
Memory Speed1125 MHzvs1125 MHz
Memory Bus128 Bitvs128 Bit
Memory TypeGDDR5vsGDDR5
Memory Bandwidth72GB/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 Units640vs640
Actual Shader Performance26%vs25%
Texture Mapping Units40vs40
Texture Rate40 GTexel/svs38 GTexel/s
Render Output Units16vs16
Pixel Rate16 GPixel/svs15.2 GPixel/s

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs4096x2160
VGA Connections0vs0
DVI Connections2vs1
HDMI Connections1vs1
DisplayPort Connections1vs-

GPU Power Requirements

Max Power80 Wattsvs80 Watts
Recommended PSU450 Watts & 30 Ampsvs450 Watts & 20 Amps

GPU Features

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

GPU Supporting Hardware

Recommended ProcessorIntel Core i3-3240 3.4GHzvsIntel Core i3-4130 3.4GHz
Recommended RAM8 GBvs8 GB
Maximum Recommended Gaming Resolution1600x900vs1600x900

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview
Radeon HD 7770 XFX Double Dissipation 1GB Edition is a Special Edition of AMD's Fast-Middle-Class Radeon HD 7770, created by XFX.

Overclock: Central Unit

Overclock: Memory Clock

Frame Buffer

Cooling Solution
XFX Ghost Thermal Technology: Creates a floating heatsink with open airflow between the PCB and the cover so that air can quickly ventilate off the card while simultaneously cooling the core process and the components. It's the only total cooling solution available today.

Benchmarks Indicate no Performance Boost over the Reference Radeon HD 7770.
Radeon R7 250X is a fast-middle-class Graphics Card based on the Graphics Core Next architecture. It offers the Cape Verde XT GPU.
The Cape Verde XT Core is a GCN 1.1 GPU and was first seen on Radeon HD 7770 and then re-used in the OEM only Radeon HD 8760.
It offers 640 Shader Processing Units, 40 TMUs and 16 ROPs, on a 128-bits memory interface of fast GDDR5.
Radeon R7 250X comes clocked at 950MHz (though there might be some 1GHz versions) and has its operating memory clock set at 1125MHz. The rated TDP board is of 80W and the release price around $99.
This card should come in 1GB and 2GB versions, though both will offer the same performance.
Its performance has proven to be exactly like Radeon HD 7770 GHz Edition (if clocked at 1GHz) and thus this card is not suited for 1080p gaming but it can handle 720p with ease. The 950MHz versions will be around 3% slower.
Recommended CPU
Possible GPU Upgrades
GPU Variants