Rockchip RK3288 Temperature Testing and Antutu Benchmarks

Orange Pi Development Boards

There are many upcoming Rockchip RK3288 based devices, and in the listing the CPU frequency varies from 1.6 GHz to 2.0 Ghz. so it’s difficult to know exactly what to expect. Ugoos has done some testing with their UT3 board measuring temperature after Antutu benchmark for different CPU clock frequencies and fan/fanless combinations.
Ugoos_UT3_HeatsinkThe board comes with a rather tiny heatsink which may explain some of the results below. They also added a small fan on top in about half the tests to compare the temperature against an heatsink only solution.

Without further delays let’s go through the results:

Frequency Antutu Score Temperature (heatsink) Temperature (Back of PCB)
Heatsink only Heatsink + fan Heatsink only Heatsink + fan
1.608 GHz 38655 67 °C N/A 70 °C N/A
1.704 GHz 39853 72 °C 50 °C 75 °C 60 °C
1.800 GHz 41440 83 °C 52 °C 85 °C 62 °C
1.920 GHz 43397 86 °C 53 °C 89 °C 64 °C
2.016 GHz 45226 N/A 55 °C N/A 67 °C

So while it’s correct to say Rockchip RK3288 can reach 45,000+ points in Antutu (resolution: 1920×1080), there likely won’t be any fanless solutions that will be clocked at 2 GHz and achieve that type of performance. From this test, it even looks like the new Rockchip TV boxes are likely to be clocked at 1.6 GHz, unless other companies select larger heatsinks. 38000 points is still a very respectable score in Antutu.

Rockchip RK3288 @ 2.0 GHz (with fan)
Rockchip RK3288 @ 2.0 GHz (with fan)

There are some products is the wild right now, notably with Nagrace HPH RK3288, and one user reports an Antutu score of “only” 31.328 points, but considers the firmware very fast, and with good XBMC support, but it currently lacks Google Play support, and one of the launcher is in Chinese only, so it’s not quite ready for prime time. If you want one, a group buying is organized via Freaktab for $180 including shipping, This is a version with 4GB RAM, 32GB Flash and HDMI In.

15
Leave a Reply

avatar
15 Comment threads
0 Thread replies
0 Followers
 
Most reacted comment
Hottest comment thread
8 Comment authors
CloudMedia OpenHour Chameleon Quad Core TV Box Boots Android or Linux from SD CardUnboxing of UyeSee G1H Android TV Box Powered by Rockchip RK3288petecnxsoftluis Recent comment authors
  Subscribe  
newest oldest most voted
Notify of
Javi
Guest

I shown a RK3288 board running 1 month ago here (pics and videos):

http://www.freaktab.com/showthread.php?14087-The-latest-news-about-RK3288/page3

Antutu is not a realiable source as can be hacked, but you can see how the board boots quiclky and how pass the antutu test.

Pumba
Guest
Pumba

@Javi
From this month, Rockchip changed SoC 3 times, i think you know it very good. Ugoos have more information in their blog

Javi
Guest

Rockchip is launching the RK3288 from six months ago… and did not finish yet. Sometimes I think we will see the Allwinner A80 TV Box before.

Delay… delay… delay… HDMI 2.0 problems… delay… delay…

Jibril
Guest
Jibril

IHMO I think that Ugoos UT3 tests are done with nonsense… the heatsink area is too small… a 4×4 fan on it is useless (a lot of noise and no CFM).
On the PCB should be applied a larger heatsink with at least an 8 x 8 cm PWM fan (velocity propotional at CPU/core load)

Pumba
Guest
Pumba

@Jibril

Then will be correct to say: “Intel overclocking with azote big nonsense, best way is using 1meter х 1 meter heatsink” I am only mean, it is not stock solution, using only for testing and checking abilities of SoC 🙂

Jibril
Guest
Jibril

@Pumba
that you wrote is your opinion (max respect) but there is an abiss between air cooling and azote instead…(and gap from little overclocking and elevate one)
For me (IMHO) using of a tiny heatsink and an useless little fan is the wrong way to try to achieve the 2 Ghz clock stable.

mac
Guest
mac

I completely agree with Jibril. If you can remember even rk3066 had huge radiator on it which covers half of a side of PCB i.e. in MK808(B). Just take a look:

http://img163.imageshack.us/img163/6338/rk901.jpg

It covers also RAM but I can’t see anything against same for rk3288.

Javi
Guest

The laws says “the more contact with the air the better heat sink”.

– Square centimeters in “contact” with the air is the most important probably. That is why heat sinks have those extruded “legs” and they are not a single block

– Aluminium 1050A or 1060A aloy are probably the best materials (205 W/m°C). Copper is “faster” (400W/m°C) but copper is heavy, expensive and difficult to make (and can not be extrudded), also it will depends on the square cm too… so probably alumium is better for this product

– If you have a fan, also must think about aerodinamics

– Of course a perfectly flat contact area

I have seen STEEL used as heat sink… like in the square M8 Box (S802). I don’t know what they want to cool with this material (45 W/m°C)

We’re designing two fanless heat sinks these days, I tried a lot of things. The more “square cm” the best cooling

Curmudgeon
Guest
Curmudgeon

@mac
In considering heat sink requirements it is important to first understand the time frames of the expected thermal loads. For dongle devices such as MK808 being used as they were designed to be used, the booting-up process may be the highest sustained load that will ever be encountered. Any subsequent interactive load peaks will generally persist for only a hundred milliseconds or so at a time. To absorb the short thermal surges that occur during interactive use, air cooling may be less important than having a heat sink with significant thermal inertia closely coupled to the SoC. A chunky heat sink with relatively low surface area but high thermal capacity may be better able to absorb short term thermal surges. OTOH, when sustained CPU loads need to be tolerated, the heat sink will require a greater ability to dissipate heat by transferring heat from the SoC to the outside air which will rely on greater surface area, ventilation and possibly forced air movement.

luis
Guest

how can i get a hold of the kernel/ROM to run at these frequencies because im am testinf one of these boards and like to cook up some roms before i get out here

pete
Guest
pete

I had a couple of thoughts on this interesting test and its results; thanks for bringing it to our attention!

I agree that proper heat sink size and design as well as good case ventilation will be key for good performance and stability of RK3288 and similar boxes; the pictures of current case don’t bode well on that front, with no apparent thermal design in place (top/bottom/side vents designed for good thermosyphon air flow).

Moreover, I was really struck by the likely need for a fan if the RK3288 is to be run above 1.5 Ghz or so. The RK3288 seems to have a higher-than-expected TDP. Too bad we don’t have any close-up IR pictures of the chip (without heat sink, of course) to look at, as they might tell us whether the heat comes mostly from the A17 GPU cores or whether the Mali 76x cores are running a bit hot also.

The thermal data from Ugoos also raise a more general question that goes beyond this specific chip: Do ARM designs really have really, by default, superior efficiency when compared to Intel’s current x86/x64 designs, especially once a certain (higher) level of computing performance is desired? For years, gospel was that ARM chips always give you more computing bang for your Watt, and superior power efficiency has been a key selling point for ARM’s designs.

Pete

Curmudgeon
Guest
Curmudgeon

@pete
Unlike RK3188, RK3288 has an on-chip temperature sensor and, in my opinion, this feature should play an important role in enabling adaptive thermal management by clock regulation without resorting to the use of fans when the device is intended primarily for interactive use cases. For devices intended for use cases with more sustained loads, a fan might be included for use when the need is indicated by the on-chip temperature sensor.

Because Android has been aimed primarily at interactive mobile applications I suspect that the designers of the many kernel clock governors have focused on achieving best responsiveness and longest battery life without much or any regard for thermal management. I hope this will not continue to be the case.

trackback

[…] heatsink placed on the Rockchip processor is rather small, and based on previous temperature testing for RK3288, this probably means the device is clocked @ 1.6 GHz for better stability. The Wi-Fi module is the […]

trackback

[…] CloudMedia, previously known  as Syabas, has been selling Popcorn Hour media players based on Linux for several years, but with OpenHour Chameleon the company is about to launch their first Android media player powered by Rockchip RK3288. The device is similar to other RK3288 TV boxes, except it does not come with internal storage at all, and instead boots Android 4.4.2 from a provided 8GB SD card, with later plans to have support for Linux operating systems such as Ubuntu. Another particularity is that they’ll use an aluminum casing for better heat dissipation of the Rockchip RK3288 processor which can get pretty hot… […]