PTM7950 Thermal Upgrade

PTM7950 phase-change thermal upgrade

PTM7950 is our premium phase-change thermal interface option for eligible die-level CELL and RSX applications. Unlike conventional thermal paste, PTM7950 begins as a thin solid interface material and changes characteristics as operating temperature increases, allowing it to conform closely to the silicon die and mating thermal surface.

This upgrade is used specifically where we have proper access to the processor die and where the mechanical thermal stack is appropriate for phase-change material.

One of the best applications is our Premium factory bare-die 40nm RSX Frankenstein configuration.

Factory bare-die 40nm RSX + PTM7950

Our Premium 40nm Frankenstein service uses selected factory bare-die 40nm RSX processors sourced from compatible early Super Slim PlayStation 3 donor hardware.

These processors were manufactured without the conventional bonded RSX integrated heat spreader found on earlier 40nm Slim RSX packages. The silicon die is exposed as part of the original factory package construction.

This gives us direct access to the 40nm RSX silicon without mechanically removing an IHS from a conventional Slim RSX package.

PTM7950 can then be installed directly on the factory-exposed RSX die as the internal die-to-heat-spreader thermal interface.

Important: the factory bare-die RSX still uses an IHS in the FAT PS3

A factory bare-die 40nm RSX does not simply contact the original FAT PS3 heatsink directly.

The bare-die Super Slim RSX package is physically lower than the original lidded 90nm RSX assembly used in backwards-compatible FAT PlayStation 3 systems. The original FAT cooling assembly was designed around the height of an RSX fitted with an integrated heat spreader.

To restore the required thermal-stack height and maintain proper contact with the original heatsink assembly, we reuse the original 90nm RSX integrated heat spreader.

The original IHS is carefully removed from the failed 90nm RSX, thoroughly cleaned and prepared, and then used with the factory bare-die 40nm replacement RSX.

This allows us to preserve the original heatsink and heat-pipe geometry while still gaining the major advantage of a factory bare-die processor underneath.

The Premium 40nm thermal stack

Our Premium factory bare-die RSX configuration retains the thermal stack required by the original FAT PS3 cooling system:

• Factory bare-die 40nm RSX silicon.
• PTM7950 phase-change material at the die-level interface.
• Cleaned and restored OEM 90nm RSX integrated heat spreader.
• External thermal interface between the IHS and heatsink.
• Original FAT PS3 heatsink and heat-pipe assembly.

The important difference is how we reach the exposed die.

We are not mechanically delidding a valuable 40nm Slim RSX. We begin with a 40nm processor that was manufactured bare from the factory and then build the required FAT PS3 thermal stack above it.

Why this is different from delidding a Slim 40nm RSX

A conventional 40nm Slim RSX has an IHS bonded to the processor package. To gain access to that silicon die, the existing package must first be mechanically or chemically separated from its original heat spreader.

That procedure can introduce unnecessary stress into the RSX substrate, underfill structure, surrounding memory devices and BGA interconnections.

We do not routinely perform that procedure.

Instead, our Premium configuration begins with a 40nm RSX that already left the factory with its silicon exposed.

We then restore the necessary package height using the cleaned original 90nm RSX IHS from the FAT console.

This gives us the thermal configuration we need without subjecting a conventional 40nm Slim RSX to an aftermarket delid.

Why the original 90nm IHS is important

The integrated heat spreader does more than simply cover the processor.

In the original FAT PS3 cooling system, it also forms an important part of the mechanical distance between the processor package and the heatsink assembly.

If the factory bare-die 40nm RSX were installed without restoring that missing height, the original heatsink geometry would no longer provide the intended thermal contact.

Reusing the properly prepared OEM 90nm RSX IHS allows us to bridge this difference while preserving the original heatsink, clamping and heat-pipe design of the console.

The bare-die RSX gives us safe factory access to the silicon. The restored OEM IHS adapts that processor back into the FAT PS3 cooling architecture.

Why PTM7950 is especially useful here

The interface between the exposed 40nm RSX die and the reused IHS is one of the most important thermal junctions in the completed Frankenstein system.

Heat generated by the RSX must cross this interface before it can enter the IHS, move into the heatsink assembly and ultimately be exhausted by the cooling fan.

PTM7950 gives us a premium phase-change material directly at this die-level junction.

As operating temperature increases, the material becomes more conformable and fills microscopic surface irregularities between the silicon and heat spreader. When the system cools, the material returns toward its solid state while remaining in position.

This behavior makes PTM7950 particularly attractive for hardware that will experience repeated heating and cooling cycles over long-term use.

Why phase-change material instead of ordinary paste?

High-quality conventional thermal paste remains an excellent thermal interface and is used throughout our restoration work where appropriate.

PTM7950 is offered as a premium option for customers who want a phase-change interface at eligible die-level locations.

Repeated thermal cycling causes the silicon, IHS and surrounding mechanical structures to expand and contract. Depending on the application, conventional paste can gradually migrate or experience pump-out over extended use.

PTM7950 is designed specifically around repeated thermal cycling and long-term interface stability, making it an excellent choice for the internal RSX die-to-IHS interface in our Premium 40nm configuration.

Why we prefer factory bare-die hardware

Direct access to the RSX die is valuable. Damaging a perfectly good RSX to get there is not.

Our factory bare-die donor strategy gives us that access without mechanically separating an IHS from a conventional 40nm Slim RSX.

• No 40nm RSX delid required.
• No prying against the 40nm RSX substrate.
• No unnecessary package flexing simply to expose the die.
• No unnecessary disturbance around the RSX memory package.
• Factory-exposed 40nm silicon from the beginning.
• PTM7950 can be applied directly at the die-level interface.
• The original 90nm IHS restores the required FAT PS3 thermal-stack height.
• The factory heatsink and heat-pipe system remains properly utilized.

If the goal is a premium die-level 40nm thermal configuration, we believe starting with a processor manufactured bare from the factory is the better engineering solution.

Our factory bare-die donor program

We have developed a donor strategy around selected early Super Slim PlayStation 3 hardware where factory bare-die 40nm RSX processors can be found.

We actively source compatible donor systems, particularly early production hardware, and maintain inventory of these processors for our Premium Frankenstein conversions.

Donor origin alone does not automatically qualify an RSX for installation. Each processor must still be inspected and electrically evaluated before it is approved for use in a customer system.

This allows us to offer the factory bare-die configuration as a repeatable premium service rather than relying on a one-off or experimental processor source.

Not every RSX is eligible for PTM7950 die-level installation

PTM7950 does not make every RSX a direct-die candidate.

We will not routinely delid a healthy conventional 40nm Slim RSX simply so PTM7950 can be placed directly on the silicon.

If the processor retains its factory-bonded IHS and there is no legitimate technical reason to disturb the package, we prefer to preserve it.

For customers who want our premium die-level 40nm configuration, the recommended path is the factory bare-die 40nm RSX replacement.

Eligible CELL applications

PTM7950 can also be used at eligible CELL die-level interfaces when the processor has been properly delidded and its internal thermal interface is being restored.

As with the RSX, proper surface preparation, material thickness and mechanical contact are critical. PTM7950 is not installed simply because the console is already disassembled.

The complete thermal path still matters

PTM7950 improves one extremely important interface, but it does not replace the rest of the cooling system.

Heat from the Premium 40nm RSX still has to travel through the complete thermal path:

• 40nm RSX silicon die: where heat is generated.
• PTM7950: transfers that heat from the die into the restored IHS.
• OEM 90nm RSX IHS: spreads the concentrated die heat across a larger surface area and restores proper stack height.
• External thermal interface: transfers heat from the IHS into the heatsink.
• FAT PS3 heatsink and heat pipes: absorb and distribute the thermal load.
• Cooling fan: moves the collected heat out of the chassis.

The strength of the Premium configuration is not one miracle material. It is making sure every stage of that thermal path is correctly restored.

Why the Premium 40nm combination makes sense

Our Premium 40nm Frankenstein configuration is designed around reducing risk while improving the console as a complete electrical and thermal system.

• Factory bare-die 40nm RSX: gives us factory access to the silicon without delidding a conventional 40nm processor.
• Restored OEM 90nm IHS: correctly adapts the bare-die processor to the original FAT cooling geometry.
• PTM7950: creates the premium phase-change interface between the exposed 40nm die and IHS.
• CELL/RSX voltage optimization: reduces electrical power and heat generation at the semiconductor level.
• 19-blade cooling configuration: provides strong cooling-to-noise performance.
• Premium thermal pads: restore secondary component thermal interfaces where replacement is appropriate.
• Efficient PSU selection: reduces unnecessary internal heat while maintaining an appropriate electrical configuration.

Instead of trying to solve every thermal problem by increasing fan speed, we address heat production, die-level transfer, heat spreading, heatsink transfer and airflow as separate parts of the same system.

Only $20 when the system is already apart

Because the RSX, IHS and cooling system are already being completely serviced during a Frankenstein conversion, PTM7950 can be added for only $20.

For customers already selecting our Premium factory bare-die 40nm RSX, this upgrade places premium phase-change material at the single interface where heat first leaves the exposed RSX silicon.

Considering the amount of work already being invested into a Premium Frankenstein build, it is one of the easiest thermal upgrades for us to recommend.

Best for

• Premium factory bare-die 40nm RSX Frankenstein conversions.
• Customers who want the highest-level RSX thermal configuration we offer.
• Eligible CELL processors receiving die-level thermal restoration.
• High-value backwards-compatible FAT PS3 systems intended for long-term use.
• Customers concerned with repeated thermal cycling and long-term interface stability.
• Complete builds combining RSX replacement, voltage optimization, premium pads, PSU selection and upgraded cooling.

Important: factory bare-die does not mean IHS-less operation

Our Premium factory bare-die RSX configuration still uses an integrated heat spreader in the completed FAT PS3 assembly.

The difference is that we do not have to remove one from the replacement 40nm RSX.

The replacement processor arrives with its silicon exposed from the factory. We then clean and reuse the original 90nm RSX IHS to create the correct thermal and mechanical interface required by the FAT PS3 heatsink assembly.

This distinction is extremely important:

Factory bare-die RSX does not mean running the RSX without an IHS. It means obtaining direct access to the 40nm die without putting the replacement processor through an aftermarket delid.

Our premium recommendation

Premium 40nm Frankenstein + factory bare-die RSX + restored OEM IHS + PTM7950 is our preferred 40nm RSX thermal configuration.

It gives us direct access to factory-exposed 40nm silicon, avoids mechanically delidding a conventional Slim RSX, retains the correct FAT PS3 heatsink geometry and places a premium phase-change interface directly between the RSX die and restored heat spreader.

If we're already installing the premium factory bare-die RSX, this is the interface we want between that silicon and the OEM heat spreader.