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While no one at home should be opening their PSU, Thermaltake have placed a red accented strip completely around the chassis which has to be destroyed to open it. This should not affect customers, but we were saddened to have to ruin the looks of the PSU to get inside it.
The TT 1425 Fan is a Brushless DC 12V model designed by Yen Sun Technology (or YSTech as most people will know them by). I have fond memories of using YSTech fans on my CPU coolers many years ago and it is great to see Thermaltake adopting their products. The fan is rated at 120,000 hours minimum life and spins at a maximum of 1,900 rpm.
Internally we can see high quality Japanese made electrolytic capacitors and solid state capacitors to handle the DC-DC converter module and 3.3V and 5V ripple. Solid state capacitors offer longer life time with increased stability and reliability.
Above close ups of the DC-DC Converter module inside the ToughPower Grand. This delivers synchronous rectification of +12V & DC to DC conversion of +3.3V and + 5V circuitry. This helps to maintain tight DC output to reduce compatibility issues while enhancing the stability of the voltage output. Additionally this gives high levels of dynamic response and increases efficiency levels.
The new Active PFC circuit in the GRAND is a double forward switching circuitry design which gives lower power loss and higher reliability and is able to reach high efficiency rates at various load levels, right up to full load. We will obviously test this out later.
The ToughPower Grand 750W unit can deliver up to 60A on the 12V rail, it was a deliberate design decision from Thermaltake to create a single, powerful 12V rail to ensure maximum compatibility and performance. The 650W model can deliver 52A on the 12V rail. The PFC coil is on the left on the image above with the main transformer in the middle.
The Toughpower Grand series are also able to maintain an ultra tight DC regulation to support C6 state CPU mode by the Zero Load (0W) design.
Above left we can see the EMI Filter and X and Y Capacitors with surge protection. Above right is a close up of the heatsinks which populate and seperate various sections of the design.
The cabling is braided completely into the chassis to ensure protection against the fraying of any wires. Everything is well shielded inside to keep crossover and potential issues negated.
