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Windows 10 vs. Windows 8.1 CrossFire & SLI Showdown
#1
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BabelTechReviews has made the move to Windows 10 after just five months on Windows 8.1.  Windows 8.1 was a hybrid operating system that most gamers disliked and the move to Windows 10 is welcomed.  We purchased a retail Windows 10 Home key from Microsoft and installed the 64-bit version about three weeks ago.  Aside from a few bugs and quirks that are usual with brand new operating systems, Windows 10 appears to be a far superior operating system compared with Windows 8, and a worthy upgrade from Windows 7.

CaptureWe want to see is if the performance is similar between Windows 8.1 and Windows 10.  We ran our 30-game benchmark suite with the GTX 980 Ti and GTX 980 Ti CrossFire with WHQL driver 353.62.first on Windows 8.1 and then on Windows 10.  We did the same thing with the R9 290X and R9 290X CrossFire on Catalyst 15.7.1.and our results are summarized below in the Main Chart.

Our testing platform is Windows 8.1 and Windows 10 64-bit, using an Intel Core i7-4790K at 4.00GHz with turbo to 4.4GHz for all cores, ASUS' Z97E motherboard, and 16GB of Kingston "Beast" HyperX RAM at 2133MHz. We benchmark at 1920x1080 at 2560x1600, and at 3840X2160 using 29 games and 3 synthetic benchmarks.

Here is our complete test configuration:

Test Configuration – Hardware


Test Configuration – Hardware
  • ASUS Z97-E motherboard (Intel Z97 chipset, latest BIOS, PCIe 3.0 specification, CrossFire/SLI 8x+8x)
  • Intel Core i7-4790K (reference 4.0GHz, HyperThreading and Turbo boost is on to 4.4GHz; DX11 CPU graphics), supplied by Intel.
  • Kingston 16 GB HyperX Beast DDR3 RAM (2×8 GB, dual-channel at 2133MHz, supplied by Kingston)
  • Nvidia reference GeForce GTX 980 Ti, 4GB reference clocks, supplied by Nvidia
  • EVGA GTX 980 Ti SC, 4GB downclocked to reference clocks as the second card in SLI, supplied by EVGA
  • PowerColor R9 270X PCS+ downclocked to reference clocks, supplied by PowerColor (fan speed set to 100% maximum to prevent throttling)
  • Vision R9 290X, reference clocks, (fan speed set to 100% maximum to prevent throttling)
  • Two 2TB Toshiba 7200 rpm HDDs; One is set up for Nvidia drivers, the other is identically configured for AMD drivers.
  • EVGA 1000G power supply unit
  • Cooler Master Seidon240 CPU watercooler, supplied by Cooler Master
  • Onboard Realtek Audio
  • Genius SP-D150 speakers, supplied by Genius
  • Thermaltake Overseer RX-I full tower case, supplied by Thermaltake
  • ASUS 12X Blu-ray writer
  • Monoprice CrystalPro 4K display
Test Configuration – Software
  • Nvidia GeForce 353.62 WHQL drivers used for the reference GTX 980 Ti and the EVGA GTX 980 Ti SC. High Quality, prefer maximum performance, single display.
  • Radeon Catalyst 15.7.1 drivers used for the VisionTek and PowerColor R9 270Xes.  Surface format optimizations, off; Application decide, VSYNC forced off, High Quality, and Tessellation App decide.
  • Latest DirectX
  • All games are patched to their latest versions.
  • VSync is off in the control panel.
  • AA enabled as noted in games; all in-game settings are specified with 16xAF always applied
  • All results show average, minimum and maximum frame rates except as noted.
  • Highest quality sound (stereo) used in all games.
  • Windows 8.1 64 and Windows 10 64-bit, all DX11 titles under DX11 render paths.  Clean installations of both Operating Systems were made.Windows 8.1 and updated with the latest updates.
  • EVGA PrecisionX 16

The 29 PC Game benchmarks & 3 synthetic benchmark tests


  • Firestrike – Extreme & Ultra 4K
  • Heaven 4.0
  • Kite Demo (Unreal 4)
  • STALKER, Call of Pripyat
  • Crysis
  • the Secret World
  • Sleeping Dogs
  • Hitman: Absolution
  • Tomb Raider: 2013
  • Crysis 3
  • BioShock Infinite
  • Metro: Last Light Redux (2014) 
  • Battlefield 4
  • ArmA 3
  • Thief
  • Sniper Elite 3
  • GRID: Autosport
  • Middle Earth: Shadows of Mordor
  • Alien Isolation
  • Assassin’s Creed Unity
  • Civilization Beyond Earth
  • Far Cry 4
  • Dragon’s Age: Inquisition
  • Metal Gear Solid V: Ground Zeroes
  • The Crew
  • Evolve
  • Total War: Attila
  • Wolfenstein: The Old Blood
  • Grand Theft Auto V
  • ProjectCARS
  • the Witcher 3
  • Batman: Arkham Knight
All of the above games were tested at 1920x1080, 2160x1600, and at 3840x2160 with Windows 10 and with Windows 8.1 for comparison.

Here is our Main Chart

Windows 10 versus Windows 8.1


Wins are in bold.  If there is a 'tie', both results are in bold

main-chart

Needs a FEATURE-2First of all, there were some issues with Windows 10 as befits a brand new operating system.  Max Payne 3 and Watch_Dogs both require .NET 3.5 framework, and Windows 10 simply refused to install it.  Even using Microsoft's workarounds like Elevated Command Prompts using the installation media failed as there is evidently a security update that conflicts with the .NET installation.  And Crysis refused to launch on the AMD drive yet it worked fine on the Nvidia drive.

Some games are also quite buggy.  ARMA 3 runs very strangely fast on both the GTX 980 Ti and on the 290X.  The IQ is not right and there have been warnings to stick with Windows 7 or 8.1 until the game is patched.  Yesterday, there was a nearly 1GB patch for ARMA 3 that we downloaded, but have not been able to test yet.  Metal Gear Solid V refuses to launch with a single R9 290X but will launch with CrossFire, but this appears to be an AMD driver issue as this happens in Windows 8.1 and with other AMD cards.  There are other games with obvious issues from the charts, with most of the variability occuring with CrossFire and SLI configurations.

Generally, there are few surprises.  Windows 8.1 and Windows 10 provide mostly identical performance with some slight variation that can be attributed to drivers, an immature OS, and benchmarking "noise" - the variability built into benching.

Conclusion

So far, we would not necessarily recommend upgrading to Windows 10 yet if you are running Windows 7.  If you are using Windows 8.1, Windows 10 is a breath of fresh air and we would recommend upgrading as soon as possible.  However, even if you are gaming on Windows 7, there are some advantages to using the latest Windows operating system and one of them appears to be better 4K gaming support.

Stay tuned, next up we are benching the MSI R9 390X against the PowerColor 290X PCS+ and also against the GTX 980 which will be published here next week.

In the meantime, join BTR’s forum for great tech discussions and also feel free to comment on this Performance Analysis in the comments section below.

Happy gaming!
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#2
Better late than never
Blush
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#3
This is interesting

http://www.3dcenter.org/news/tests-zu-wi...erformance

[Image: attachment.php?aid=27]


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#4
That's cool, they analysed all the data. It's great that they used your review!
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