XFX

XFX Speedster MERC319 RX 7800 XT Black Gaming Graphics Card 16GB GDDR6 HDMI 3xDP, AMD RDNA 3 RX-78TMERCB9

Name: XFX Speedster MERC319 RX 7800 XT Black Gaming Graphics Card 16GB GDDR6 HDMI 3xDP, AMD RDNA 3 RX-78TMERCB9
Brand: XFX
SKU: B0CGM93HJD

Status: XFX Speedster MERC319 RX 7800 XT Black Gaming…: Unavailable on Amazon as of 2026-10-06 16:14 UTC. SpecPicks has no in-stock listing with matching specs on file; the search below lists current offers. eBay sellers may still list this model new or used.

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Bottom line: The XFX Speedster MERC319 RX 7800 XT Black Gaming Graphics Card 16GB: 16GB GDDR6 handles 1440p ultra and modern texture packs with headroom; main trade-off: triple-fan MERC319 shroud is long; check case clearance first.

Unavailable on Amazon as of 2026-10-06 16:14 UTC

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

Similar: GIGABYTE Radeon RX 7800 XT Gaming OC 16GB… — $978.98 on Amazon as of 2026-10-06 16:14 UTC (price may vary).

View Current Price — $978.98

Similar: XFX Quicksilver AMD Radeon RX 7800 XT Magnetic… — $798.00 on Amazon as of 2026-10-06 22:19 UTC (price may vary).

View Current Price — $798.00

Similar: Sapphire 11330-02-20G Pulse AMD Radeon RX 7800… — $895.00 on Amazon as of 2026-10-06 22:17 UTC (price may vary).

View Current Price — $895.00

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

By Mike Perry, Founder & Editor-in-Chief · Listing data updated 2026-10-06

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

✓ 16GB GDDR6 handles 1440p ultra and modern texture packs with headroom
✓ AMD RDNA 3 architecture on the RX 7800 XT chipset
✓ Boost clock up to 2565 MHz for high frame rates
✓ MERC triple-fan cooler keeps thermals and noise in check

Cons

✗ Triple-fan MERC319 shroud is long; check case clearance first
✗ No ray-tracing edge over comparable NVIDIA cards at this tier
✗ 16GB is ample now but not a 4K-maxed futureproof buffer
✗ Three DisplayPort plus one HDMI, no USB-C output

Manufacturer description

The XFX AMD Radeon RX 7000 Series graphics cards, featuring the groundbreaking AMD RDNA 3 architecture, deliver ultra-high frame rates for your favorite games.

SpecPicks Verdict

SpecPicks scored XFX Speedster MERC319 RX 7800 XT Black Gaming Graphics Card 16GB… using a rating × review-volume × price-fit model applied to our editorial and benchmark analysis across the graphics cards category. XFX'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.

Key Features

Chipset: AMD RX 7800 XT
Memory: 16GB GDDR6
XFX MERC Triple Fan Cooling Solution
Boost Clock: Up to 2565 MHz

Full Specifications

Brand	XFX
Memory	16GB GDDR6
Chipset	AMD RX 7800 XT
Model Name	RX-78TMERCB9
Unit Count	1 Count
Boost Clock	Up to 2565 MHz
Model Number	RX-78TMERCB9
Built-In Media	Graphics Card
Number of Fans	3
Mfr Part Number	RX-78TMERCB9
Video Processor	AMD
Antenna Location	Gaming
Graphics Card Ram	16 GB
Graphics Ram Size	16 GB
Graphics Ram Type	GDDR6
Compatible Devices	Desktop
Memory Clock Speed	19.5 GHz
Graphics Coprocessor	AMD Radeon RX 7800 XT
Graphics Description	XFX Speedster MERC319 RX 7800 XT
Warranty Description	3 year manufacturer

Performance Data

View gaming FPS, AI inference throughput, and synthetic scores for the Radeon RX 7800 XT — the core hardware component in this product. Benchmarks sourced from TechPowerUp, PassMark, and the r/LocalLLaMA community.

Which local LLMs fit in 16 GB?

16 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) — needs 20 GB+
❌ 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 9 community runs from 7 sources, the Radeon RX 7800 XT generates a median 100.9 tok/s on 7–9B models at Q4 (per LocalScore.ai).

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

Ready to buy?

XFX Speedster MERC319 RX 7800 XT Black Gaming Graphics Card 16GB GDDR6 HDMI 3xDP, AMD RDNA 3 RX-78TMERCB9 is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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