ASRock

ASRock AMD Radeon™ RX 7900 XT Phantom Gaming 20GB OC Graphics Card 320 Bit 7680 x 4320 0dB Silent Cooling 3 x DisplayPort™ 2.1 GDDR6 1 x HDMI™ 2.1 20Gbps PCI Express 4.0

Name: ASRock AMD Radeon™ RX 7900 XT Phantom Gaming 20GB OC Graphics Card 320 Bit 7680 x 4320 0dB Silent Cooling 3 x DisplayPort™ 2.1 GDDR6 1 x HDMI™ 2.1
Brand: ASRock
SKU: B0BTPJBSBV

Status: ASRock AMD Radeon™ RX 7900 XT Phantom Gaming… (RX 7900 XT 20GB graphics card): Unavailable on Amazon as of 2026-10-20 16:14 UTC. Closest in-stock match (same RX 7900 XT 20GB graphics card): ASUS TUF Gaming AMD Radeon RX 7900 XT OC Edition…, $1,219.87 on Amazon as of 2026-10-21 10:15 UTC (price may vary). eBay sellers may still list this model new or used.

View Current Price — $1,219.87 🛒 Search eBay for this model

Bottom line: The ASRock AMD Radeon™ RX 7900 XT Phantom Gaming 20GB OC Graphics Card: 20GB GDDR6 on a 320-bit bus - headroom for 4K texture packs and local LLMs; main trade-off: needs two 8-pin PCIe power connectors, not a single 12VHPWR cable.

Unavailable on Amazon as of 2026-10-20 16:14 UTC

As an Amazon Associate, SpecPicks earns from qualifying purchases. Full disclosure →

Currently unavailable on Amazon. Not the same product — 3 in-stock alternatives:

Same RX 7900 XT 20GB graphics card: ASUS TUF Gaming AMD Radeon RX 7900 XT OC Edition… — $1,219.87 on Amazon as of 2026-10-21 10:15 UTC (price may vary).

View Current Price — $1,219.87

Similar: PowerColor Red Devil AMD Radeon RX 6700 XT… — $765.00 on Amazon as of 2026-10-20 22:13 UTC (price may vary).

View Current Price — $765.00

Similar: ASROCK AMD Radeon RX 6600 Challenger D Dual Fan… — $582.29 on Amazon as of 2026-10-20 22:15 UTC (price may vary).

View Current Price — $582.29

Original listing (currently unavailable) → Compare to similar graphics cards

By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-20

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides. About the author →

Pros & Cons

Pros

✓ 20GB GDDR6 on a 320-bit bus - headroom for 4K texture packs and local LLMs
✓ 84 RDNA 3 compute units with dedicated ray-tracing and AI accelerators
✓ Boost clock up to 2450MHz, game clock 2075MHz out of the box
✓ 0dB Silent Cooling idles the Phantom Gaming 3X fans to zero RPM
✓ Three DisplayPort 2.1 outputs plus HDMI 2.1 drive up to 7680x4320

Cons

✗ Needs two 8-pin PCIe power connectors, not a single 12VHPWR cable
✗ PCI Express 4.0 interface, not the newer 5.0 spec
✗ Triple-fan Phantom Gaming 3X shroud demands a wide, deep case
✗ Reinforced metal frame and backplate add weight - plan on a GPU support bracket

Manufacturer description

Clock: GPU / Memory Boost Clock*: Up to 2450MHz / 20Gbps Game Clock**: 2075MHz / 20Gbps Key Specification AMD Radeon™ RX 7900 XT GPU 20GB GDDR6 on 320-Bit Memory Bus 84 AMD RDNA™ 3 Compute Units (With Rt+Ai Accelerators) 80MB AMD Infinity Cache™ Technology PCI® Express 4.0 Support 2 x 8-pin Power Connectors 3 x DisplayPort™ 2.1 / 1 x HDMI™ 2.1 Key Features Polychrome SYNC Phantom Gaming 3X Cooling System Striped Ring Fan Reinforced Metal Frame Stylish Metal Backplate 0dB Silent Cooling Super Alloy Graphics Card

SpecPicks Verdict

SpecPicks scored ASRock AMD Radeon™ RX 7900 XT Phantom Gaming 20GB OC Graphics Card… using a rating × review-volume × price-fit model applied to our editorial and benchmark analysis across the graphics cards category. ASRock's graphics cards lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for graphics cards of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Video review

Nvidia was clearly wrong - AMD RX 7900 XT and XTX — ShortCircuit on YouTube

Key Features

Polychrome SYNC
Phantom Gaming 3X Cooling System
Striped Ring Fan
Reinforced Metal Frame
Stylish Metal Backplate
0dB Silent Cooling

Full Specifications

ASIN	B0BTPJBSBV
Brand	ASRock
Model Name	RX7900XT PG 20GO
Item Weight	1.4 Kilograms
Manufacturer	ASRock
Model Number	RX7900XT PG 20GO
Built-In Media	Quick Installation Guide, cooling fan
Number of Fans	3
Video Processor	AMD
Antenna Location	Gaming
Graphics Card Ram	20 GB
Graphics Ram Size	20 GB
Graphics Ram Type	GDDR6
Compatible Devices	Desktop
Memory Clock Speed	20000 MHz
Graphics Coprocessor	AMD Radeon RX 7900 XT
Graphics Description	Dedicated
Warranty Description	3 years
Video Output Interface	DisplayPort, HDMI
Graphics Card Interface	PCI-Express x16

Performance Data

View gaming FPS, AI inference throughput, and synthetic scores for the Radeon RX 7900 XT — the core hardware component in this product. Benchmarks sourced from TechPowerUp, PassMark, and the r/LocalLLaMA community.

Which local LLMs fit in 20 GB?

20 GB holds a 20–27B model at Q4 with a modest context window; 30B-class weights need 24 GB.

✅ 7–9B models (Llama 3.1 8B, Qwen 3 8B) — fits at Q4
✅ 12–14B models (Qwen 3 14B, Phi-4) — fits at Q4
✅ 20–27B models (Gemma 3 27B, Mistral Small) — fits at Q4
❌ 30–35B models (Qwen 3 32B, QwQ 32B) — needs 24 GB+
❌ 70B models (Llama 3.3 70B, Qwen 2.5 72B) — needs 48 GB+

Across 5 community runs from 5 sources, the Radeon RX 7900 XT generates a median 116.2 tok/s on 7–9B models at Q4 (per llm-tracker.info).

Per-model VRAM guide: which GPU for which LLM →

Ready to buy?

Amazon shows no buyable offer for ASRock AMD Radeon™ RX 7900 XT Phantom Gaming… at the last check. The closest in-stock match with the same RX 7900 XT 20GB graphics card is ASUS TUF Gaming AMD Radeon RX 7900 XT OC Edition…. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

View Current Price — $1,219.87