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Gaming Performance Comparison

Recommended System Requirements
Game Radeon R7 250X Radeon HD 7770 1GB GDDR5
Red Dead Redemption 2 312% 296%
Doom Eternal 254% 241%
Cyberpunk 2077 465% 444%
Call of Duty: Modern Warfare 312% 296%
Dragon Ball Z Kakarot 154% 144%
Microsoft Flight Simulator 465% 444%
Star Wars: Jedi - Fallen Order 465% 444%
Grand Theft Auto VI 529% 506%
Need For Speed Heat 312% 296%
Warcraft 3: Reforged 84% 85%

In terms of overall gaming performance, the graphical capabilities of the AMD Radeon HD 7770 1GB GDDR5 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 R7 250X and the Radeon HD 7770 1GB GDDR5 are the same, which means the Radeon R7 250X and the HD 7770 have equal limitations when it comes to graphical data transfer.

Both the Radeon R7 250X and the Radeon HD 7770 1GB GDDR5 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 R7 250X requires 80 Watts to run and the Radeon HD 7770 1GB GDDR5 requires 80 Watts. We would recommend a PSU with at least 450 Watts for the Radeon R7 250X and a PSU with at least 450 Watts for the HD 7770. 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 Speed950 MHzvs1000 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 Date10 Feb 2014vs15 Feb 2012
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768
8.8
vs green tick
8.9
1600x900
6.6
vs green tick
6.8
1920x1080
5.1
vs green tick
5.2
2560x1440
3.4
vs green tick
3.5
3840x2160
2.2
vs green tick
2.3

GPU Memory

Memory2048 MBvs1024 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%
Comparison

GPU Display

Shader Processing Units640vs640
Actual Shader Performance25%vs26%
Technology28nmvs28nm
Texture Mapping Units40vs40
Texture Rate38 GTexel/svs40 GTexel/s
Render Output Units16vs16
Pixel Rate15.2 GPixel/svs16 GPixel/s
Comparison

GPU Outputs

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

GPU Power Requirements

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

GPU Features

DirectX12.0vs12.0
Shader Model5.0vs5.0
Open GL4.4vs4.4
Open CL-vs-
Notebook GPUnono
SLI/Crossfireyesvsyes
Dedicatedyesvsyes
Comparison

GPU Supporting Hardware

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

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewRadeon 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.
Overview
Radeon HD 7770 is a Fast-Middle-Class Graphics Card based on the First Revision of the Graphics Core Next (GCN) Architecture.

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.

GPU
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.

Memory
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.

Performance
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
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GPU Variants

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