![]() Afterburner is a customized version of RivaTUner and Kombustor is a customized version of FurMark. But this time, instead of using FurMark and RivaTuner, I used MSI’s overclocking tools: Afterburner and Kombustor. ![]() To overclock the R5770 Hawk, I used the same method I described in this tutorial. On the other hand, memory voltage does not vary and is always around of 1.610V: For example with Kombustor in 1024×768 windowed mode, the GPU voltage is set to 1.226V: The GPU voltage is adjusted depending on the required graphics load. ![]() Small difference but for some overclockers it’s important. Under heavy load with MSI Kombustor (1920×1024 fullscreen), the GPU voltage automatically reaches 1.231V:Īs you can see, Afterburner does not display the exact value of the GPU voltage: there is a difference of around 0.02V (0.031V in the picture). In idle mode, the GPU core voltage is 0.959V: Okay, let’s see what a multimeter says when it’s connected to the GPU v-check point of the R5770 Hawk. To reach the max GPU clock you have to increase the GPU voltage to the max… Depending on your GPU overclocking, you must modify the GPU voltage to ensure a stable work of your graphics card. With MSI Afterburner, you can modify the GPU voltage (GPU voltage control is disabled by default). Fortunately V-Check points connexions are enough long on the back face to allow this kind of hack: Since MSI didn’t send me the additional cables to connect a multimeter to the card, I used very small clips connected in the back face of the PCB. There are two V-Check points: one for the GPU and one for the memory. One interesting feature of MSI’s cards (Hawk and Lightning series) is the presence of built-in voltage measurement points called V-Check points. But I can work without any problem near the R5770 Hawk. The Twin Frozr II is able to chill the GPU very efficiently with an extremely low noise even under heavy load! My ears are very sensitive and even a Zalman VF1000 VGA cooler is too noisy for me. ![]() MSI has done a very good job on the VGA cooler part. R5770 Hawk official page with complete description and specifications can be found HERE. MSI’s R5770 Hawk is a factory overclocked graphics card: the GPU (Juniper) is clocked at 875MHz (reference board = 850MHz) while the memory keeps the reference clock (1200MHz). ![]()
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