Although Sony's new 4K-ready PlayStation 4 Pro supports SATA III with up to 6 Gbps transfer speeds, the console's stock hard drive only rocks 5400 RPM, meaning it can't even leverage the full transfer speeds of the SATA III protocol.
This bit of news was uncovered by iFixit, who recently tore down the PS4 Pro to reveal its innards. The PS4 Pro's 1TB internal platter drive is rated 3.0 Gb/s, which is actually SATA II speeds...but some outlets seem to report the HDD supporting 6 Gb/s speeds instead. Either way, the 5200 RPM isn't enough to hit the max blistering fast rates of SATA III.
Remember that the SATA III protocol was established for SSDs that were bottlenecked by SATA II speeds, and most new platter hard drives will use SATA III regardless if they can fully tap the protocol or not. To get the most out of the PS4 Pro's transfer speed capabilities, you'll need to pick up a fairly expensive solid state drive.
Despite not being able to fully tap 6 GB/s speeds, PS4 Pro owners have reported that disc game installations are blazing fast on the console. The PS4 Pro also uses a faster Wi-Fi chip that supports up to 5GHz frequencies across 802.11 a/b/g/n/ac protocols, so game downloads will be much faster.
Read Also: https://www.tweaktown.com/news/54901/ps4-pro-max-temps-hit-35c/index.html

Some PS4 Pro owners have faced some pretty big issues with the system, however: the console itself is displaying blank screens on certain HDR-enabled 4K UHDTVs. Sony has yet to issue an official response to the reports, but many gamers are being told that their TV's aren't 4K ready.
The PS4 Pro is available now for $399, and check below for everything we know about the console so far:
Original PS4 Specs
- CPU: 8 Jaguar Cores at 1.6GHz
- GPU: AMD GCN, 18 CUs at 800MHz (equivalent to Radeon HD 7850)
- Memory: 8 GB GDDR5, 176 GB/s
PS4 Pro Specs
- CPU: 8 Jaguar Cores at 2.1GHz
- GPU: 4.20 TFLOPs Polaris GPU
- Memory: 8 GB GDDR5, 218 GB/s




PS4 Pro: What we know so far:
- Double GPU power over existing PS4 models (roughly 2x AMD Radeon HD 7850)
- AMD Polaris GPU support
- 14nm FinFET SoC likely
- CPU with boosted clock rate
- Higher memory bandwidth
- No 4K UHD Blu-ray player
- Launches November 10 for $399
- 4K resolution upscaling
- HDR support
- Higher frame rates, improved in-game performance across the board
- Plays all existing PS4 games, but not every PS4 game will leverage the new hardware for improved performance
- 1TB hard drive
Read more about Sony's PS4 Pro:
- Here's why Sony nixed PS4 Pro's 4K Blu-ray player
- PS4 Pro uses AMD Polaris GPU, sits below RX 470
- PS4 Pro FAQ: Sony explains the new $399 4K PS4 console
- 14 games have PS4 Pro support built-in so far
- Here's all the PS4 Pro upgraded games so far
- PS4 Pro won't play all PS4 games at 1080p 60FPS
- Mass Effect: Andromeda runs at 4K 30FPS on PS4 Pro
- Sony's new PS4 Pro rocks double GPU power, 4K and HDR
- Sony's high-end PS4 Pro costs $399, launches November 10
- Devs have final say on PS4 Pro's Forward Compatibility
- PS4 Pro specs: 4.2 TFLOPs, Jaguar CPU, 310W power draw
- Microsoft trolls PS4 Pro's lack of a 4K Blu-ray player
- Sony's PS4 Pro doesn't hit native 4K gaming