top | item 43852905

(no title)

luyu_wu | 10 months ago

Absolutely a lomg way to go.

Interestingly, the chip is rated to run at DDR4-3200 or DDR5, so it's strange C&C got half that.

The power issues are likely from by modern standards pre-historical clocking behavior (single P-state to my understanding)!

discuss

order

clamchowder|10 months ago

It does clock ramp from 800 MHz idle to 3.2 GHz under load, with 900, 1000, 1100, 1300, 1500, 1800, 2200, and 2700 MHz steps in between until it hits 3.2 GHz after 71.6 ms. Article was getting long enough so I just left it at, it reaches 3.2 GHz and stays there even though the spec sheet says it should go higher.

I remoted into the system for testing (Cheese/George had it), and he said it took 3-4 cold reboots for it to come up, and suspected memory wasn't training correctly. So I did all the testing without ever rebooting the system, because it might not come back up if I tried.

jkampman|10 months ago

Tangential but thank you for always providing such detailed benchmarks and insights. Your work is a treasure!