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Gaming Performance Comparison

In terms of overall gaming performance, the graphical capabilities of the AMD Radeon HD 7770 Vapor-X GHz OC Edition are noticeably better than the AMD Radeon R7 250 2GB GDDR5.

The HD 7770 has a 100 MHz higher core clock speed and 16 more Texture Mapping Units than the R7 250. This results in the HD 7770 providing 20 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 100 MHz higher core clock speed and 8 more Render Output Units than the R7 250. This results in the HD 7770 providing 9.6 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 R7 250 was released over a year more recently than the HD 7770, and so the R7 250 is likely to have better driver support, meaning it will be more optimized for running the latest games.

The R7 250 has 1024 MB more video memory than the HD 7770, so is likely to be much better at displaying game textures at higher resolutions. However, overall, the HD 7770 has superior memory performance.

The HD 7770 has 9.6 GB/sec greater memory bandwidth than the R7 250, which means that the memory performance of the HD 7770 is marginally better than the R7 250.

The Radeon R7 250 2GB GDDR5 has 384 Shader Processing Units and the Radeon HD 7770 Vapor-X GHz OC Edition has 640. However, the actual shader performance of the R7 250 is 345.6 and the actual shader performance of the HD 7770 is 576. The HD 7770 having 230.4 better shader performance and an altogether better performance when taking into account other relevant data means that the HD 7770 delivers a noticeably smoother and more efficient experience when processing graphical data than the R7 250.

The Radeon R7 250 2GB GDDR5 requires 65 Watts to run but there is no entry for the Radeon HD 7770 Vapor-X GHz OC Edition. We would recommend a PSU with at least 400 Watts for the R7 250.

Can I Run It

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GPU Core Details

Core Speed1000 MHzvs1100 MHz
ArchitectureGCN 1.1 Oland XTGCN 1.0 Cape Verde XT
Notebook GPUnono
SLI/Crossfireyesvsyes
Dedicatedyesvsyes
Release Date08 Oct 201301 Aug 2012
GPU LinkGD LinkGD Link
Approved
Comparison

GPU Memory

Memory2048 MBvs1024 MB
Memory Speed1150 MHzvs1300 MHz
Memory Bus128 Bitvs128 Bit
Memory TypeGDDR5vsGDDR5
Memory Bandwidth73.6GB/secvs83.2GB/sec
Comparison

GPU Display

Shader Processing Units384vs640
Actual Shader Performance345.6vs576
Technology28nmvs28nm
Texture Mapping Units24vs40
Texture Rate24 GTexel/svs44 GTexel/s
Render Output Units8vs16
Pixel Rate8 GPixel/svs17.6 GPixel/s
Comparison

GPU Display Tech

DirectX11.2vs11.1
Shader Model5.0vs5.0
Open GL4.3vs4.2
Max Resolution (WxH)2560x1600vs4096x2160
VGA Connections1vs0
DVI Connections1vs2
HDMI Connections1vs1
Comparison

GPU Power Requirements

Max Power65 Watts-

GPU Supporting Hardware

Recommended RAM8 GBvs8 GB
Recommended Screen Size1600x9001600x900
Recommended PSU400 Watts & 20 Amps-

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewRadeon R7 250 is a middle-class graphics card based on the GCN architecture.
It packs a core codenamed Oland XT, previously used on Radeon HD 8670 (OEM). Therefore, it offers 384 Shader Processing Units, 24 TMUs and 8 ROPs, on a 128-bit bus width of fast GDDR5. While the central unit runs at 1000MHz and goes up to 1050MHz, in Turbo Mode, the memory clock operates at 1150MHz.
Its performance is somewhat comparable to Radeon HD 7750, though the latter will perform better at DirectX 11 games.
Please note that are also DDR3 variants which are significantly slower and that this GDDR5 version should come in 1GB and 2GB versions, though both will offer the same performance.
Radeon HD 7770 Vapor-X GHz OC Edition is a special edition of the fast-middle-class Radeon HD 7770. See the standard version for more information about it.
The differences include increased memory and core clocks, from 1125MHz to 1300MHz and from 1000MHz to 1100MHz, respectively. A new quiet and efficient cooling system, called Vapor-X, is also available.
Benchmarks indicate a 8% performance boost when compared to the standard Radeon HD 7770.
Benchmarks indicate that the most demanding games (e.g. Metro 2033) still require reduced settings to be played smoothly.
Recommended CPUAMD Phenom 9600 Quad-Core
Intel Celeron J1900 2.0GHz
Intel Xeon Processor E5320
Intel Pentium G630T 2.3GHz
AMD Phenom II X3 700e
AMD FX-4170
AMD Phenom II X6 1090T
AMD APU A8-6600K Quad-Core
Intel Core i3-3250 3.5GHz
AMD APU A8-7600 Quad-Core
Possible GPU Upgrades-GeForce GTX 760 Zotac 4GB Edition
GeForce GTX 760 EVGA 4GB Edition
Quadro K5000
GeForce GTX 760
Radeon R9 280 Sapphire Dual-X OC 3GB Edition
GPU VariantsRadeon R7 250 MSI 1GB GDDR5 OC Edition
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