ASUS GeForce GTX 560 Ti DirectCU II 448 Core 1280MB Graphics Card Review - Test Setup and Overclocking
CPU: Intel i5-2500K @3.8GHz
CPU Cooling: Cooler Master TPC 812
Thermal Paste: Noctua NT-H1
Motherboard: ASUS P8Z77-V Pro
RAM: 2x4GB Patriot Viper Xtreme II 1600MHz DDR3
GPU: ASUS GTX 560 Ti 448 Core
OS HDD: Patriot Pyro 60GB SSD
Secondary HDD: Patriot Wildfire 120GB SSD
OS: Windows 7 Professional 64-bit
We ran a variety of benchmarks to evaluate how the GTX 560 Ti 448 performs alongside several other members of the GTX 560 family, the GTX 560Ti 900MHz Factory Overclocked Crysis 2 Edition from eVGA, the ASUS GTX 560 Ti DCUII, and the Zotac GTX 560 Multiview. Each benchmark was run a minimum of 3 times, and if greater than 10% variability was seen between runs, additional runs were conducted to ensure variability was eliminated across a wide number of runs.
All cards were tested on the full-release 295.73 drivers provided by Nvidia.
The following were used to benchmark a wide variety of graphical engines from DX9 to DX11:
-Far Cry 2 Benchmark Tool
-World in Conflict Benchmark Tool
-Dirt 3 Benchmark Tool
-Aliens vs. Predators Benchmark Tool
-3DMark11 GPU Benchmark Suite
The GTX 560 Ti family is generally revered for its overclocking potential, and one thing to keep in mind about the GTX 560 Ti 448, is that it's not really a GTX 560 Ti, it's a GTX 570 that wasn't binned with its better brethren. This means that, in general, the overclocking potential isn't remarkable, and is also likely to vary more than other cards. This doesn't mean you won't get a performer, it's just less likely, that's what you're essentially paying for with a GTX 570 (along with the extra CUDA cores). ASUS has also removed Nvidia's power limit design, which removes severe peak OC limitations imposed upon reference cards.
We were quite happy with our sample, in that we were able to reach 880 MHz on the GPU core and 1000 MHz on the memory at a relatively-low 1.075V, which was stable for most programs. Dirt 3 didn't like it, however, even bumping the voltage several steps, and for our benchmarks we use the lowest-common-denominator, which in this case, was an overclock of 850/975 MHz GPU/Memory clocks. The Alien vs Predator Benchmark saw an FPS boost to 74.43 FPS at 880/1000 over 72.93 FPS at 850/975, which we report in our charts.
With the DirectCU II cooling, heat became a near afterthought. We monitored it using GPU Tweak, but even at 1.088V and pushing the voltage, the highest temperature we saw was 71 degrees Celcius at nearly-silent noise levels. ASUS' GPU Tweak also includes advanced fan controls, so you can ramp up the fan speed to keep the card as cool as you'd like or create a custom fan speed curve based upon temperature, although the fans do become quite loud at full speed, as you'd see on any card.
The key word here is variability, as some of the cards binned to become GTX 560 Ti 448s are still very capable cards, but some are worse than others. Other 448 cards are capable of 900MHz GPU clocks, fully stable, ours was a respectable 880 MHz, except for Dirt 3 becoming unstable over 850 MHz. Averages have been seen to be in the 825-840 MHz range, so you should understand that with what you see here for our results, your mileage may vary.