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ASUS preps High-End Non-Reference HD 4890 Accelerator
Our colleagues over at Techpowerup have some photos of a custom design Radeon HD 4890 graphics card from ASUS.
As it looks, this model will have an enhanced 100% digital PWM design, 6+2 phase power controlled by VRM controller chips that can be controlled by software, one 8-pin PCIe power connector instead of two, a Fujitsu high-density ML capacitor for better voltage regulation and a high-performance cooler.
- 100% digital PWM design - something the reference PCB features too, but enhanced by a small design change by ASUS
- The 6+2 phase power circuit is controlled by two independent VRM controller chips, the vGPU can be controlled by software, and can be set up to 1.4 V with the included software
- An 8-pin PCI-E power input replaces one of two 6-pin inputs on the reference model. This is said to add electrical stability and increase overclocking headroom
- ASUS added the industry's highest-quality voltage regulation thanks to the Fujitsu high-density ML capacitor, that facilitates the lowest ESR, and is best suited for digital PWM circuits (the cleanest power makes it to the GPU)
- The GPU is expected to be clocked above 900 MHz, with the GDDR5 memory at 1000 MHz (4.00 GHz effective)
- It will feature a non-reference high-performance cooler, which doesn't want to be pictured yet
The clockspeeds of this Radeon HD 4890 are expected to be well over 900MHz for the GPU, with GDDR5 memory at 4000MHz. Pricing and availability is unknown, but the reference design should be launched in the second week of April for just shy of $250.
Photo's courtesy of techpowerup
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