S.T.A.L.K.E.R.: Call of Pripyat (DirectX 11) – version 1.6.02, Enhanced Dynamic DX11 Lighting profile with all parameters manually set at their maximums, we used our custom cop03 demo on the Backwater map.Unigine Heaven Demo (DirectX 11) – version 3.0, maximum graphics quality settings, tessellation at “extreme”, AF16x, 1280×1024 resolution with MSAA and 1920×1080 with MSAA 8x.3DMark 2011 (DirectX 11) – version 1.0.3.0, Performance and Extreme profiles.3DMark Vantage (DirectX 10) – version 1.0.2.1, Performance and Extreme profiles (only basic tests).We included two new gaming titles – F1 2012 and Borderlands 2: The list of games and applications used in this test session includes two semi-synthetic benchmarking suites, one technical demo and seventeen games of various genres with all updates installed as of the beginning of the test session date. There were no other changes in the driver settings. If the corresponding options were missing, we changed these settings in the GeForce driver Control Panel. We enabled anisotropic filtering and full-screen anti-aliasing from the game settings. The tests were performed in two image quality modes: “Quality+AF16x” – default texturing quality in the drivers with enabled 16x anisotropic filtering and “Quality+ AF16x+MSAA 4(8)x” with enabled 16x anisotropic filtering and full screen 4x or 8x antialiasing if the average frame rate was high enough for comfortable gaming experience. We ran the tests in two resolutions: 1920×10×1440 pixels. Nvidia GeForce 306.23 beta driver from for Nvidia based graphics cards.All tests were performed in Microsoft Windows 7 Ultimate 圆4 SP1 with all critical updates as of that date and the following drivers: The test session started on September 8, 2012. 16 GB of system DDR3 memory worked at 2 GHz frequency with 9-11-10-28 timings and 1.65V voltage. The GPU frequencies of these graphics cards were locked at 1020 MHz, and the graphics memory frequency remained unchanged at 6008 MHz: We used MSI, Gigabyte and KFA2 graphics cards to build our 2-way and 3-way SLI configurations: Power supply: Seasonic SS-1000XP Active PFC F3 (1000 W, 120 mm fan).Control and monitoring panel: Zalman ZM-MFC3.System case: Antec Twelve Hundred (front panel: three Noiseblocker NB-Multiframe S-Series MF12-S2 fans at 1020 RPM back panel: two Noiseblocker NB-BlackSilentPRO PL-1 fans at 1020 RPM top panel: default 200 mm fan at 400 RPM).Backup drive: Samsung Ecogreen F4 HD204UI (SATA-II, 2 TB, 5400 RPM, 32 MB, NCQ).Drive for programs and games: Western Digital VelociRaptor (300GB, SATA-II, 10000 RPM, 16MB cache, NCQ) inside a Scythe Quiet Drive 3.5” HDD silencer and cooler.System drive: Crucial m4 256 GB SSD (SATA-III,CT256M4SSD2, BIOS v0009).KFA2 GeForce GTX 660 Ti EX OC 2 GB GDDR5, 1020/6008 MHz.Gigabyte GeForce GTX 660 Ti Ultra Durable 2 GB 256 bit GDDR5, 1020/6008 MHz.MSI N660Ti PE 2GD5/OC TwinFrozr IV 2 GB 256 bit GDDR5, 1020/6008 MHz.ASUS GeForce GTX 680 DirectCU II TOP 2 GB 256 bit GDDR5, 1137/6008 MHz.CPU cooler: Phanteks PH-TC14PE (2 x 135 mm fans at 900 RPM).CPU: Intel Core i7-3960X Extreme Edition, 3.3 GHz, 1.2 V, 6 x 256 KB L2, 15 MB 元 (Sandy Bridge-E, C1, 32 nm).Mainboard: Intel Siler DX79SI (Intel X79 Express, LGA 2011, BIOS 0537 from ). Three of them were used to prepare this article.Īll participating graphics cards were tested in the following testbed: We won’t describe the cards themselves because we’ve recently posted a large roundup of eight GeForce GTX 660 Ti products. So, in this review we will study the efficiency of Nvidia’s SLI technology with two and three GeForce GTX 660 Ti graphics cards and will compare such multi-GPU configurations with the fastest single-processor card and with the dual-processor GeForce GTX 690. This approach is perfectly right in the majority of applications, but there are situations when the two mainstream cards are going to be faster than the single top-end card in average as well as bottom speed, which is important for playability. However, even hardcore gamers, let alone ordinary users, prefer to buy a single top-end graphics card instead of two mainstream ones running in SLI or CrossFireX mode. Frankly speaking, these technologies are far from popular, yet their developers keep on optimizing them with each new graphics architecture to ensure maximum performance scalability. Every graphics card from both Nvidia and AMD supports multi-GPU technology (called SLI and CrossFireX, respectively), the only exception being junior product series, which are not really meant for gaming.
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