3DMark offers a synthetic benchmark that is predictable in its results, something of great importance in benchmarking. Shadow of Mordor, GTA V, & Battlefield Hardline (not shown here) are new enough that they heavily eat RAM. GRID: Autosport and Metro: Last Light provide highly-optimized benchmarking titles to ensure stability on the bench. We already know ACU and Far Cry 4 consume massive amounts of video memory, often in excess of the 2GB limits of some cards.
Metro: Last Light (Very High + Very High tessellation at 1080 High / High at 1440). GRID: Autosport (Ultra 1440, Ultra 4K). We conducted a large suite of real-world tests, logging VRAM consumption in most of them for comparative analysis. Instead, we take an average of the lowest 1% of results (1% low) to show real-world, noticeable dips we then take an average of the lowest 0.1% of results for severe spikes. We do not measure maximum or minimum FPS results as we consider these numbers to be pure outliers. GN Test Bench 2015Īverage FPS, 1% low, and 0.1% low times are measured. FPS measurements were taken using FRAPS and then analyzed in a spreadsheet.Įach game was tested for 30 seconds in an identical scenario on the two cards, then repeated for parity. Parity checking was performed with GPU-Z. VRAM utilization was measured using in-game tools and then validated with MSI's Afterburner, a custom version of the Riva Tuner software. Stock overclocks were left untouched for stock tests. Game settings were manually controlled for the DUT. The latest GeForce press drivers were used during testing. Thanks to Jon Peddie Research for GTX 970 & R9 280X support. Our thanks to supporting hardware vendors for supplying some of the test components. We tested using our updated 2015 GPU test bench, detailed in the table below. This post showcases our GTX 980 Ti initial overclock on the reference cooler, yielding a considerable framerate gain in game benchmarks. Overclocking on Maxwell offers some granularity without making things too complicated, though it's not until we get hands-on with board partner video cards that we'll know the true OC ceiling of the 980 Ti. Unfortunately, this metric can't be exceeded beyond what the BIOS natively allows (without a hack, anyway), and means that we're sharing watts between the core clock, memory clock, and voltage increase. NVidia's newest design institutes a power percent target (“Power % Target”) that increments power provisioning to the die to grant OC headroom. 
Maxwell, as we've written in a how-to guide before, overclocks differently from other architectures.
The GTX 980 Ti runs GM200, the same GPU found in nVidia's Titan X video card, and is driven by Maxwell's new overclocking ruleset. Our initial review of the $650 GTX 980 Ti, published just over twelve hours prior to this post, mentioned an additional posting focusing on the card's overclocking headroom.
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