(Tested and Burned) ASUS ROG Matrix GTX 580 Platinum Review





ASUS ROG MATRIX GTX 580 review index


3 – ASUS ROG MATRIX GTX 580: Gallery, part 2

Yep my friends, the photo gallery has two parts because there are many details on the MATRIX GTX 580.

Let’s start with the power connectors. There are two 8-pin connectors:

ASUS ROG Matrix GTX 580




As explained in this article, two 8-pin connectors mean the maximum power draw of the board is 375W. And I can tell you that the power draw of the ROG MATRIX is very close to this maximal limit when the card is overclocked and highly stressed by FurMark.

Like other GTX 560 Ti DC2 or GTX 570 DC2, the MATRIX GTX 580 has two LEDs to know if the power connectors are correctly plugged. If both LEDs are green, it’s all right, otherwise something is not properly connected:

ASUS ROG Matrix GTX 580

ASUS ROG Matrix GTX 580




And nice thing, ASUS has fixed the problem of the GTX 570 DC2: now both power LEDs are visible!

Right near the power connectors, you find voltage check points. ASUS offers 5 voltages:
- GPU voltage: GPU
- Memory voltage: MEM
- PLL voltage:
- PCI-Express voltage: 12V
- PCI-Express voltage: 3V3



This feature is called ProbeIt by ASUS. You can monitor hardware voltage in real time.

ASUS ROG Matrix GTX 580

ASUS ROG Matrix GTX 580




To measure the GPU voltage with a multimeter for example, just connect the positive probe on the GPU point and the negative probe on the ground.

The ModZone: ASUS provides four open circuits (the functions are disabled). To enable the functionalities, just connect (require a soldering) a simple wire between each point:

ASUS ROG Matrix GTX 580




The ModZone is mainly reserved for LN2 overclockers. Here are the details:

  • Disable OCP: remove overheat, overcurrent protection for extreme overclocking under LN2
  • FBVDDO: adjust memory voltage
  • PEXVDD: adjust PLL voltage
  • Power PWM Freq: double the Super Hybrid Engine clock (from 250KHz to 500KHz) to provide stability under super high clock



The big red button is the 100% fan speed. When pressed the fan speed is set to 100%. Once pressed again, the fan speed returns to auto. This is 100% hardware and totally bypass the software fan speed setting.

ASUS ROG Matrix GTX 580



Here is a small vid that shows the use of the button:





Right near the red button, you have two PLUS and MINUS buttons. These buttons are used to change the GPU voltage (or core voltage, or Vcore, or VDDC). Thanks to the GPU voltage check points (ProbeIt), I measured that each pressure on the PLUS button adds around 0.013V to the GPU voltage. Then with 10 steps, you can add up to 0.13V to the GPU voltage.

ProbeIt check points are very important because there is a difference between what you measure with the multimeter and is displayed by the GPU monitoring utilities. For example, with the multimeter I read 0.960V for VDDC and GPU Tweak gives me 0.955V.

ASUS ROG Matrix GTX 580

ASUS ROG Matrix GTX 580



The three button (fan speed and GPU voltage) are called TweakIt by ASUS.

The MATRIX GTX 580 has two DVI connectors, one HDMI port and one DisplayPort output. The Safe Mode button allows to reset the BIOS to the default settings in case of problems during a BIOS flash or if your OC settings are a bit too high. Worry-free OC!

ASUS ROG Matrix GTX 580






ASUS ROG MATRIX GTX 580 review index


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