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Overclocking Performance
Overclocking results will always vary, and the speeds we attain with our samples won’t necessarily coincide with your own tests. With that said, we still want to explore the headroom of our samples.
For most of these evaluations, there’s a specific software suite that goes along with the card in question. Asus has GPU Tweak, Zotac has FireStorm and EVGA has PrecisionX. All of these applications are actually derivatives of MSI’s own software, Afterburner. We used this application to do our custom overclocking. However, MSI also created software that goes along with its Gaming line of products. The Gaming app has a button to set the fans to 100% temporarily, and it has a calibration menu to change the card's color options. It also allows for single-click overclocking using factory presets.
Silent Mode sets the GPU clock down to Nvidia’s reference speed of 1127MHz with a GPU Boost clock of 1178MHz. Gaming Mode is the default setting; its GPU clock setting is 1190MHz, while GPU Boost is increased to 1253MHz. OC Mode is the most aggressive preset, pushing the GPU to 1216MHz and Boost to 1279MHz. Each settings runs stably, with comparable acoustics.
After testing the factory overclock settings, MSI Afterburner was used to further optimize the frequencies. The software works exactly the same as when MSI's competitors rebadge it. There are slider bars for core voltage, power limit, temperature limit, the core clock rate, memory frequency and fan speed. Profiles can also be saved to five configurable slots, allowing for unique settings on a per-application basis.
Before doing any overclocking, the power target was set to maximum, which is 108% on this card. The temp limit remained linked and set itself to 95 degrees.
Using 10MHz increments, we underwent the painstaking process of finding the top stable clock of 150MHz. Initially I thought +160MHz would work. However, during the temperature testing in Battlefield 4, significant texture glitches were observed after five or six minutes of game play. Backing down to +150MHz solved this.
Interestingly, the Gaming Mode's setting is 50MHz slower than the clock rate when MSI's Gaming app is not running. It actually displayed -50MHz on the core clock slider in Afterburner when the Gaming app is running in the background. The fan control is also overridden by the app, leaving Afterburner’s fan control completely useless.
After finding the top stable core clock, memory was put to the test. Since memory clocks tend to run much higher than GPU cores, 30MHz increments were used. Eventually, +500MHz was found to be the best our card could muster without issues during extending gaming.
The overclocking performance graph omits the results from EVGA’s card because it was not on-hand to re-test. Results with the new driver and a new version of 3DMark are so dramatically different that the previous numbers aren't comparable. Upon re-testing the Zotac card, this theory was confirmed as the result was over 300 points higher than the previous configuration.