AMD Radeon HD 6870 Memory Voltage Modification - With a Pencil

If you performed the modification, please provide feedback to your HWBOT friends :-)

We reviewed the AMD Radeon™ HD 6870 just a week ago, and found that it had a pretty decent overclocking headroom. One of our samples even managed a good 1GHz on its Graphics Processing Unit (GPU).


Step Four: High School Art Class

With your favourite pencil (a 2B grade one works alright), shade across the highlighted 0402 resistor. You may wish to check the resistor value just before you engage in this absolutely pleasurable act - it measure approximately 5kOhms.

We shaded across our resistor (with our lethally-sharpened IKEA pencil) until the effective resistance dropped to approximately 4.4kOhm, and with that, memory voltage rose to 1819mV. A darker shade will naturally increase your memory voltage even further.

To prevent graphite shavings from irritating neighboring resistors, you can mask off the surrounding area with your favourite insulating tape.


Netherlands Drucchi says:

And how much did that do for the mem-freqs? Ah read it... 40 MHz, not a lot, but it is a lot if you concider it's free!

Belgium Teemto says:

Bench setup : check
Pencil : check
Tape : check
forgetting something
6870: missing :-(

Nevertheless usefull tip, saves the rest some work

Netherlands Bullus says:

What about the 6850 :)?

Australia T_M says:

Will have a card in my grubby hands this weekend and issue a full set of mods hopefully on Sunday

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