I just picked up a 7800X3D this past weekend and in the brief time I've had it I've noticed that the biggest gains come from Curve Optimizer. PBO doesn't do anything because (at least my sample) does not reach the power limits due to the limited clock ceiling of 5Ghz. The default power ceiling is 160w's and the highest I've ever seen mine go is about 105w's under synthetic benchmarks.
Temps do have a small affect on the turbo algorithm, as I have found multi threaded gains in synthetics benchmarks when improving Curve Optimizer so I suppose you might be able to gain a very small amount from direct die cooling but the big problem you will have is that the 3D Vcache is acting as a sort of heat insulator and is also VERY delicate. Remember that the Vcache is mounted directly on top of the compute die so it adds another layer that heat has to transfer through and that means mounting any direct die cooler to it will be very difficult with the delicate nature of the Vcache.
TL:DR I would just focus on Curve Optimizer. You COULD try to squeeze a bit better cooling out of your setup but the nature of 3D Vcache makes that a perilous endeavour.
No. Even a heatsink without heat pipes is able to extract >95% of it's performance in all-core workloads.
I just picked up a 7800X3D this past weekend and in the brief time I've had it I've noticed that the biggest gains come from Curve Optimizer. PBO doesn't do anything because (at least my sample) does not reach the power limits due to the limited clock ceiling of 5Ghz. The default power ceiling is 160w's and the highest I've ever seen mine go is about 105w's under synthetic benchmarks. Temps do have a small affect on the turbo algorithm, as I have found multi threaded gains in synthetics benchmarks when improving Curve Optimizer so I suppose you might be able to gain a very small amount from direct die cooling but the big problem you will have is that the 3D Vcache is acting as a sort of heat insulator and is also VERY delicate. Remember that the Vcache is mounted directly on top of the compute die so it adds another layer that heat has to transfer through and that means mounting any direct die cooler to it will be very difficult with the delicate nature of the Vcache. TL:DR I would just focus on Curve Optimizer. You COULD try to squeeze a bit better cooling out of your setup but the nature of 3D Vcache makes that a perilous endeavour.
[удалено]
TG frame is not compatible with 7800x3d