KFA2 GeForce RTX 2070 EX in review - Price disanotomy doesn't have to be cheap, but quiet and cool | igorsLAB | Page 4

The opposite of expensive does not always have to be cheap. In fact, it would also be inexpensive. This is exactly what KFA2 must have thought when the GeForce RTX 2070 EX was designed. Many things were taken over here from the larger KFA2 cards and also the cooler has a decent portiönchen hip bacon, so that nothing burns. I take a closer look at this...

Power consumption and loads

At 11.6 watts in the idle, the power consumption of this board partner card is similar to that of the Founders edition. For gaming and in the torture loop, the card is available at approx. 180 watts also just above the power limit specified in the BIOS. If I overclock the card to its limit, then it is already almost 200 watts, so no more, despite 114% Power Target. But according to BIOS, the limit is already 200 watts.

Here is also a short excerpt from what KFA2 has given this card in the firmware of limits:

The voltages are in the expected range, with the oc's permissible board power being the limiting factor, not the voltage. One notices very clearly that Nvidia deliberately limits here before a possible maximum is reached.

The load distribution on the rails is good, because the maximum 5.5 amperes of the motherboard slot are never exceeded. Even with the external power supply connections, it remains well below 200 watts.

Power supply design and peak loads/currents

As I have already demonstrated in detail in my basic article "The fight of graphics card against power supply – power consumption and load peaks demystified", there are also temporarily higher loads in the millisecond range, which are unfavorable in case of unfavorable designed or improperly equipped power supplies can already lead to unexplained shutdowns. The TBP (Typical Board Power) measured by the graphics card manufacturer or the reviewers does not really help for a stable design of the system.

Peaks with intervals between 1 and 10 ms can lead to shutdowns with very fast-reacting protective circuits (OPP, OCP), especially for multi-rail power supplies, although the average power consumption is still in the norm. For the KF2 RTX 2070 EX I would therefore calculate with 215 to 240 watts to have enough reserves in case of cases. A short excerpt with high resolution now show us the 20 ms intervals, how I run them automatically for valuation:

Detailed recording of average power consumption and flowing currents

As usual, I now also set aside the power consumption and the flowing currents as detailed graphics of my oscillograph measurements. A service that hardly anyone else offers and which shows how the maps "tick" in detail: