Testbed Configuration and Testing Methodology
We have already tested Radeon HD 7790 performance in our previous article, therefore today we are going to compare side by side two Radeon HD 7790 based graphics cards working at identical frequencies, but featuring different amount of memory: 1 GB vs. 2 GB. We will also test a pair of identical 1 GB graphics cards in a CrossFireX configuration. It was fairly easy to find a competitor for them, because a pair of 1 GB Radeon HD 7790 based graphics accelerators costs around $260-$280. Today they will be competing against a new Zotac GeForce GTX 760, which we will review in greater detail in our next article. We also added a GeForce GTX 650 Ti BOOST here, for comparison purposes.
All participating graphics cards were tested in a system with the following configuration:
- Mainboard: Intel Siler DX79SI (Intel X79 Express, LGA 2011, BIOS 0559 from 03/05/2013);
- CPU: Intel Core i7-3970X Extreme Edition, 3.5/4.0 GHz (Sandy Bridge-E, C2, 1.1 V, 2 x 256 KB L2, 15 MB L3);
- CPU cooler: Phanteks PH-TC14PE (2 x Corsair AF140 fans at 900 RPM);
- Thermal interface: ARCTIC MX-4;
- Graphics cards:
- Zotac GeForce GTX 760 AMP! Edition 2 GB (1111/1176/6208 MHz);
- Asus Radeon HD 7790 DirectCU II 1 GB (HD7790-DC2OC-1GD5, 1075/6400 MHz);
- Sapphire Radeon HD 7790 DUAL-X OC 1 GB (1075/6400 MHz);
- Gigabyte Radeon HD 7790 OC 2 GB (GV-R779OC-2GD, 1075/6400 MHz);
- MSI GeForce GTX 650 Ti BOOST Twin Frozr III 2 GB (N650Ti TF 2GD5/OC BE, 1033/1098/6008 MHz)
- System memory: DDR3 4 x 8 GB G.Skill TridentX F3-2133C9Q-32GTX: 2133 MHz / 9-11-11-31 / 1.6 V;
- System drive: Crucial m4 256 GB SSD (SATA-III,CT256M4SSD2, BIOS v0009);
- Drive for programs and games: Western Digital VelociRaptor (300GB, SATA-II, 10000 RPM, 16MB cache, NCQ) inside Scythe Quiet Drive 3.5” HDD silencer and cooler;
- Backup drive: Samsung Ecogreen F4 HD204UI (SATA-II, 2 TB, 5400 RPM, 32 MB, NCQ);
- 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: standard 200 mm fan at 400 RPM);
- Control and monitoring panel: Zalman ZM-MFC3;
- Power supply: Corsair AX1200i 1200 W (with a default 120 mm fan);
- Monitor: 27” Samsung S27A850D (DVI-I, 2560x1440, 60 Hz).
You have already seen all graphics cards on AMD chips earlier in this review, so here are their competitors from the “green” camp:
In order to lower the dependence of the graphics cards performance on the overall platform speed, I overclocked our 32 nm six-core CPU with the multiplier set at 48x, BCLK frequency set at 100 MHz and “Load-Line Calibration” enabled to 4.8 GHz. The processor Vcore was increased to 1.38 V in the mainboard BIOS:
Hyper-Threading technology was enabled. 32 GB of system DDR3 memory worked at 2.133 GHz frequency with 9-11-11-31 timings and 1.6V voltage.
The test session started on June 8, 2013. All tests were performed in Microsoft Windows 7 Ultimate x64 SP1 with all critical updates as of that date and the following drivers:
- Intel Chipset Drivers 126.96.36.1997 WHQL from 03/27/2013 for the mainboard chipset;
- DirectX End-User Runtimes libraries from November 30, 2010;
- Nvidia GeForce 320.49 WHQL driver from 07/02/2013 for Nvidia based graphics cards;
- AMD Catalyst 13.6 beta 2 driver from 06/04/2013 + Catalyst Application Profiles 13.5 (CAP1) for AMD based graphics cards.
We tested the graphics cards performance in two resolutions: 1920x1080 and 2560x1440. 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 4x(8x)” with enabled 16x anisotropic filtering and full screen 4x or 8x antialiasing, in those cases when the average fps rate remained high enough for comfortable gaming experience. We enabled anisotropic filtering and full-screen anti-aliasing from the game settings. If the corresponding options were missing, we changed these settings in the Control Panels of Catalyst and GeForce drivers. We also disabled Vsync there. There were no other changes in the driver settings.
The benchmarking suite used this time included two popular semi-synthetic benchmarks and 11 resource-consuming games of various genres:
- 3DMark 2013 (DirectX 9/11) – version 1.1.0, benchmarks in “Cloud Gate”, “Fire Strike” and “Fire Strike Extreme” scenes;
- Unigine Valley Bench (DirectX 11) – version 1.0, maximum image quality settings, AF16x and(or) MSAA 4x, 1980x1080 resolution;
- Total War: Shogun 2: Fall of the Samurai (DirectX 11) – version 1.1.0, built-in benchmark (Sekigahara battle) at maximum graphics quality settings and enabled MSAA 8x in one of the test modes;
- Battlefield 3 (DirectX 11) – version 1.4, all image quality settings set to “Ultra”, two successive runs of a scripted scene from the beginning of the “Going Hunting” mission 110 seconds long;
- Sniper Elite V2 Benchmark (DirectX 11) – version 1.05, we used Adrenaline Sniper Elite V2 Benchmark Tool v188.8.131.52 BETA with maximum graphics quality settings (“Ultra” profile), Advanced Shadows: HIGH, Ambient Occlusion: ON, Stereo 3D: OFF, two sequential test runs;
- Sleeping Dogs (DirectX 11) – version 1.5, we used Adrenaline Sleeping Dogs Benchmark Tool v184.108.40.206 with maximum image quality settings, Hi-Res Textures pack installed, FPS Limiter and V-Sync disabled, two consecutive runs of the built-in benchmark with quality antialiasing at Normal and Extreme levels;
- Hitman: Absolution (DirectX 11) – version 1.0.446.0, built-in test with Ultra image quality settings, with enabled tessellation, FXAA and global lighting;
- Crysis 3 (DirectX 11) – version 220.127.116.110, all graphics quality settings at maximum, Motion Blur amount – Medium, lens flares – on, FXAA and MSAA4x modes enabled, two consecutive runs of a scripted scene from the beginning of the “Swamp” mission 110 seconds long;
- Tomb Raider (2013) (DirectX 11) – version 1.1.743.0, we used Adrenaline Benchmark Tool, all image quality settings set to “Ultra”, V-Sync disabled, FXAA and 2x SSAA antialiasing enabled, TessFX technology activated, two consecutive runs of the benchmark built into the game;
- BioShock Infinite (DirectX 11) – version 18.104.22.168455, we used Adrenaline Action Benchmark Tool v22.214.171.124, two consecutive runs of the built-in benchmark with “Ultra” and “Ultra+DOF” quality settings;
- Metro: Last Light (DirectX 11) – version 1.0.4, we used built-in benchmark for two consecutive runs of the D6 scene. All image quality and tessellation settings were at “Very High”, “Advanced PhysX technology was enabled, we tested with and without SSAA antialiasing;
- GRID 2 (DirectX 11) – version 126.96.36.19904, we used built-in benchmark, graphics image quality settings were at their maximum in all aspects, the tests were run with and without MSAA 8x antialiasing with eight cars on the Chicago track;
- Company of Heroes 2 beta (DirectX 11) – version 188.8.131.5204, two consecutive runs of the integrated benchmark at maximum image quality and physics effects settings.
If the game allowed recording the minimal fps readings, they were also added to the charts. We ran each game test or benchmark twice and took the best result for the diagrams, but only if the difference between them didn’t exceed 1%. If it did exceed 1%, we ran the tests at least one more time to achieve repeatability of results.