You said you’re using just one DIMM in another reply, which could contribute to this.
Besides that, I have no trouble getting ~30W TDP under heavy GPU load. Afterburner reports GPU temperature at ~70 degrees Celsius (though I’d take it with a grain of salt because many tools don’t seem to support 7040 very well yet). Was your chip throttling? You can try running a CPU benchmark and see if you get expected results. FYI, I got >9000 CPU score in Time Spy, >2000 in Cinebench R15 loop, and >5200 in Cinebench R20 loop.
You said you’re using just one DIMM in another reply, which could contribute to this.
Besides that, I have no trouble getting ~30W TDP under heavy GPU load. Afterburner reports GPU temperature at ~70 degrees Celsius (though I’d take it with a grain of salt because many tools don’t seem to support 7040 very well yet). Was your chip throttling? You can try running a CPU benchmark and see if you get expected results. FYI, I got >9000 CPU score in Time Spy, >2000 in Cinebench R15 loop, and >5200 in Cinebench R20 loop.