Clock rates and overclocking reserves
The beat thing looks really good. In Full-HD and also WQHD in places, the card manages well over 2500 MHz with BIOS 2 and even goes up to about 2550 MHz for a short time in places. Fully warmed up and in Ultra HD, it’s still up to 2500 MHz, depending on the game and load. If you increase the power limit by the maximum possible 15%, then the clock rate can even be increased a bit, because it stabilizes up to 2600 MHz and even a bit more, depending on the chip quality. For a short time, peaks of just over 2.6 GHz were also visible, but only briefly and only for the gallery. Borderline overclocking with a chiller is possible, and then the 2.7 GHz limit is just reached even in Ultra HD.
If the chiller is replaced by a normal custom loop with a water temperature of approx. 35 °C instead of the 20 °C of the chiller, the clock rate drops over time by approx. 50 MHz compared to the 15 °C cooler variant.
Temperatures GPU and GDDR6 memory
Now let’s look at the temperatures. AMD still uses the so-called hotspot temperature internally, but now solves this much smarter and with more and cleverly positioned measuring points or sensors. The total can reach up to 110 °C at the peak, but in practice it was only just under 60 °C with the chiller. The “GPU diode”, internally called edge temperature by AMD (we also know it from NVIDIA), is significantly lower with the values.
I was able to read out the GDDR6 with the help of a special engineering tool. It is interesting to note that there are even two values per memory module, since the memory also has twice the capacity and apparently outputs two sensors. From these 16 single values one weights then in the tool the memory temperature, which I have given you in the diagram once with. The memory remains, even in the long run, inside (substrate) at just over 35 °C, which is an acceptable temperature. The highest readout values are likely to be generated by the two modules with no cooling fins above their heatsink. The difference between the individual modules is up to 3 degrees!
Now once again the normal water cooling:
This is also impressively proven by the IR images, where I only test the chiller, but once with the more economical BIOS 2 …
… and once with BIOS 1.
Compared to the already tested block from Alphacool and the same TDP (reference board with power limit of 301 watts TGP) there are even almost 7 degrees less below the GPU. The voltage converters on the left suffer a bit from the GPX-A’s poorer pads, but still operate in the deep green range. That’s what I meant by a little more modern design. Since the product of Alphacool is actually missing only on clever pads. But you can easily change that yourself.
- 1 - Introduction and technical details
- 2 - Teardown: PCB, power supply and cooler
- 3 - Gaming performance
- 4 - Gaming power draw in detail and efficiency
- 5 - Power consumption, voltages and standards
- 6 - Transients and PSU recommendation
- 7 - Clock rate and temperatures, infrared
- 8 - Overview and conclusion
87 Antworten
Kommentar
Lade neue Kommentare
Urgestein
1
Urgestein
Veteran
Urgestein
Mitglied
Mitglied
Veteran
Neuling
Mitglied
Urgestein
Mitglied
Urgestein
Mitglied
Urgestein
Mitglied
Urgestein
Mitglied
1
Alle Kommentare lesen unter igor´sLAB Community →