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Forums - Sony Discussion - Wired: PS4 Naked

globalisateur on 07 November 2013

So the APU and 8 GDDR5 chips are cooled actively by a 85 mm fan at one side while the APU and the 8 others memory chips are passively cooled at the other side of the motherboard. I knew it!


You can clearly see thermal paste on the metallic plate (attached by 2 screws) on the passive side of the board.

Video of the teardown btw to be added on the OP:
http://www.wired.com/gamelife/2013/11/playstation4-teardown-video/



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drkohler on 07 November 2013
ethomaz said:

If anybody need a bigger picture of the motherboard.

Thanks for the picture.

Unfortunately it confirms this turd of a harddisk:

http://www.storagereview.com/hitachi_travelstar_z5k500_review_hts545050a7e380

So anybody who was not sure about replacing the PS4 harddisk, go shopping now for a REAL harddisk (or a big SSD if you won the lottery)



Dark_Feanor on 07 November 2013

The APU is bigger than I espected.

Interesting there is still room to put the GDDR closer to the APU.



ethomaz on 07 November 2013

drkohler said:

Thanks for the picture.

Unfortunately it confirms this turd of a harddisk:

http://www.storagereview.com/hitachi_travelstar_z5k500_review_hts545050a7e380

So anybody who was not sure about replacing the PS4 harddisk, go shopping now for a REAL harddisk (or a big SSD if you won the lottery)

Yeap... I think it is the same than PS3 500GB... at least a 7200RPM was a good ideia with close to 50GB installs.



drkohler on 07 November 2013
Dark_Feanor said:
The APU is bigger than I espected.

Interesting there is still room to put the GDDR closer to the APU.

How do you know? the grrd5 chips have paste on them, no way to size the whole thing..



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Dark_Feanor on 07 November 2013
drkohler said:
Dark_Feanor said:
The APU is bigger than I espected.

Interesting there is still room to put the GDDR closer to the APU.

How do you know? the grrd5 chips have paste on them, no way to size the whole thing..

 

I´ve seem some GPUs where the VRAM where much closer to the main chip. I don´t know if they were DDR3 though. Don´t now either what limits they came closer, probally the TDP.



ethomaz on 07 November 2013

drkohler said:

How do you know? the grrd5 chips have paste on them, no way to size the whole thing..

I think he is talking about add more GDDR5 chips like two in the other side of the APU...

BTW there a GDDR5 chip in each side of the board... 16 chips of 512MB density (4Gbps model).



ethomaz on 07 November 2013

Dark_Feanor said:

I´ve seem some GPUs where the VRAM where much closer to the main chip. I don´t know if they were DDR3 though. Don´t now either what limits they came closer, probally the TDP.

I think they have space to put a little longer and it helps with heat... other point is there is a chip in each side of the board... 16x chips.



ethomaz on 07 November 2013

Pics here: http://imgur.com/a/KlGOD



drkohler on 07 November 2013
ethomaz said:

Dark_Feanor said:

I´ve seem some GPUs where the VRAM where much closer to the main chip. I don´t know if they were DDR3 though. Don´t now either what limits they came closer, probally the TDP.

I think they have space to put a little longer and it helps with heat... other point is there is a chip in each side of the board... 16x chips.

The distance is just an optimisation considering -All the lines that connect the chips (there are 170 pins on each gddr5 chip!), -Heat dissipation as far away as possible from the apu, -More noise as you get away from the apu, etc

I get around 19mm*19mm for the chip carrier. Guessing 1mm "safety margin", that gives a die size of <=290mm^2