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Blackstone Repair.

Your GPU died. The manufacturer won't help. Local shops can't do board-level work.

We can. And here's what we promise.

Your hardware,
our Reliable approach.

Not sure what's wrong? Try the self-diagnostic ›

While our primary focus is GPU repair, we also take on board-level work on other devices by request. Tell us about your device ›

VRAM UPGRADE

RTX 4090

48GB

First service of its kind in the UK

Same capacity as a £7,000 RTX 6000 Ada, at a fraction of the price.

From £1,000.

24GB → 48GB

VRAM doubled

24 × 2GB

Micron GDDR6X modules

900 GB/s

memory bandwidth

Built for memory-bound work, so larger models, longer context, and sustained AI runs all fit where 24GB runs out.

Learn more

ALSO AVAILABLE

32GB

RTX 4080 SUPER

The same upgrade, 16GB to 32GB, from £850.

Learn more ›

PCB & COOLER UPGRADES

GPU Transplants.

Your core and memory come off the old board
They move onto a new PCB and cooler
The finished card is tested and returned

One service that can fix and upgrade at the same time.

From £350.

See available boards ›

HOW IT WORKS

Six steps.
Zero ambiguity.

From booking to return, you see everything we do.
No surprises, no hidden costs.

Book

Tell us what happened. We reply as soon as we can, usually within 24 hours.

Ship

Send it to us, drop it off, or we generate a label for you.

Diagnose

We find the fault at board level and walk you through what we found.

Repair

Component-level repair on the board itself, the work most shops send away.

Test

Stress tested under full load, with a certificate on every fully tested repair.

Return

We pay the return shipping on every successful repair.

See our full process ›

New to the name, not to the craft.

NOTES

  1. 1. Repair pricing is fixed and quoted upfront. Additional charges may apply for expensive replacement components such as memory chips. This is always discussed and agreed with you before any work begins.
  2. 2. Free return shipping included on all successful repairs, sent by Royal Mail Tracked 48. You can upgrade the return service at the payment stage by paying the difference. See Policies & Terms for the full shipping policy.
  3. * Blackstone Repair is the first dedicated provider of RTX 4090 24GB to 48GB VRAM upgrade services in the United Kingdom, to the best of our knowledge at the time of launch. This service is not endorsed by or affiliated with NVIDIA Corporation.
  4. § Based on the UK retail price of the NVIDIA RTX 6000 Ada Generation 48GB, approximately £7,000 as of July 2026. The RTX 6000 Ada is a professional workstation card and differs in other respects.
  5. † Pricing is from £1,000 when your original 12 memory chips are healthy and can be transplanted to the new board. Final price depends on parts required. Get a quote for an accurate price.
  6. ‡ Increased VRAM capacity reduces out-of-memory errors for most workloads. Results may vary depending on model size, batch size, and framework configuration.