Ask GN 58: What is Memory Bandwidth & Voltage Validation
1,109This special edition of Ask GN was shot before returning home from PAX & Whistler, in the peak-to-peak gondola. We talk memory bandwidth & core voltage.
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Timestamps:
00:33 - Enigma_One: "What's the latest on HardwareLuxx's Vega 56 undervolt validation?"
1:39 - Fore1gn: "I have a question regarding memory bandwidth in GPUs - different graphics cards can have different bandwidth, like 200-300- 400 Gbps, what does that specifically mean? How much data the GPU can move per second or something else? Because higher bandwidth doesn't necessarily mean faster card."
4:26 - Streetguru: "Should AMD add an automatic Undervolt Utility To Wattman? Where in the GPU would reder a scene at a user specified frequency, say 1600 mhz for Vega, then gradually scale down the voltage until it sees instability where it hopefully stops itself to prevent a crash? All of the data could then be output to a file where the user could set the states in wattman accordingly. Or could someone write a script to do this with current free software?"
5:44 - Contractor316: "Do you know if there’s any qualitiative performance and/or power consumption difference between using a single, split PCI-e cable or two separate PCI-e cables to power a graphics card? And what's the effect on the PSU?"
7:56 – Vega Voltage checkpoints
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Host: Steve Burke
Video: Andrew Coleman
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