Heat spreader on PPU?

[Salduchi]

I've got 3 HVC-CPU-07's and 2 have low serial numbers with PPU E's and both have metal heat sinks. The other one with a high serial number doesn't. I'm surprised Nintendo thought this was necessary. Was this just a precaution or do E revision run hotter than G and H revisions?

Not that I mind having a slightly beefed up cooling situation on my main Famicom. Maybe I should take a heat spreaders from one of my other Famicom and put it on the 2A03 CPU too. Never seen a stock CPU with any kind of heat sink.

[Skawo]

The early PPUs do get considerably more toasty than later ones.

Another thing they sometimes did was to put this rubber cover around the PPU. No idea what THAT's about.

[Salduchi]

I guess 2 PPU's of the same revision have difference in heat? The E revision on my NES doesn't have any heat sinks.

I had a CPU-06 that had that rubber thing around its PPU. I think they did that mostly on consoles made before the recall.