Radeon HD 6990M Crossfire vs T400

G3D Mark is a standard benchmark that measures graphics performance in real-world gaming scenarios. It simplifies comparing cards from different brands, where higher scores directly correlate with better fps and smoother gaming experiences.

Radeon HD 6990M Crossfire vs T400 FPS Benchmarks

Predicted gaming performance across popular games. Tested paired with Ryzen 7 9800X3D to isolate GPU performance.

Search any supported game below to compare 1080p FPS for both components.

Radeon HD 6990M Crossfire vs T400: Pros, Cons & Final Verdict

See where each GPU makes more sense in practice: raw FPS, VRAM, features, power draw, pricing, and long-term headroom.

Radeon HD 6990M Crossfire

2011

Why buy it

✅Competitive enough if your priority is price, power, or specific feature preference.

Trade-offs

❌Less VRAM, with 2 GB vs 4 GB for high-resolution textures and newer games.
❌2011 hardware with 2 GB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
❌
288.3% HIGHER MSRP
$699 MSRPvs$180 MSRP
❌Lower G3D Mark per dollar, at 5.0 vs 20.1 G3D/$ ($699 MSRP vs $180 MSRP).
❌66.7% higher power demand at 50W vs 30W.

T400

2021

Why buy it

✅Costs $519 less on MSRP ($180 MSRP vs $699 MSRP).
✅Delivers 300.4% more G3D Mark for each dollar spent, at 20.1 vs 5.0 G3D/$ ($180 MSRP vs $699 MSRP).
✅100% more VRAM for high-resolution textures and newer games (4 GB vs 2 GB).
✅Radeon HD 6990M Crossfire is already obsolete for modern gaming, so T400 is the less risky modern option long term.
✅Draws 30W instead of 50W, a 20W reduction.

Trade-offs

❌Older hardware, 4 GB of VRAM, and weaker feature support mean it will age faster in newer AAA releases.

Quick Answers

Which GPU is faster for gaming right now?

T400 is the faster gaming card right now based on the synthetic data we have. It leads by 3.1% in PassMark G3D (3,609 vs 3,500), which is the best performance signal available in this matchup.

Which GPU is the safer long-term pick for 2026 and beyond?

T400 is the safer long-term pick for 2026 and beyond. The case is simple: 4 GB vs 2 GB of VRAM, a 12nm process instead of 40nm, and a newer 2021 generation instead of 2011. That gives it more room for heavier textures and higher settings over time.

Which GPU is the better buy today?

T400 makes the most sense to buy today. It is $519 cheaper on MSRP at $180 vs $699, and it leads G3D-per-dollar by 300.4% (20.1 vs 5.0), so the value case lines up with the gaming result.

Radeon HD 6990M Crossfire vs T400 Technical Specifications

Side-by-side specs, architecture details, clocks, memory, power, and platform differences.

Radeon HD 6990M Crossfire

The Radeon HD 6990M Crossfire is manufactured by AMD. It was released in July 12 2011. It features the Terascale 2 architecture. The core clock speed is 715 MHz. It has 2240 shading units. The thermal design power (TDP) is 50W. Manufactured using 40 nm process technology. G3D Mark benchmark score: 3,500 points.

T400

The T400 is manufactured by an unknown manufacturer. It was released in May 6 2021. It features the Turing architecture. The core clock ranges from 420 MHz to 1425 MHz. It has 384 shading units. The thermal design power (TDP) is 30W. Manufactured using 12 nm process technology. G3D Mark benchmark score: 3,609 points.

⚡

Graphics Performance

The Radeon HD 6990M Crossfire scores 3,500 and the T400 reaches 3,609 in the G3D Mark benchmark — just a 3.1% difference, making them near-identical in rasterization performance. The Radeon HD 6990M Crossfire is built on Terascale 2 while the T400 uses Turing, both on 40 nm vs 12 nm. Shader units: 2,240 (Radeon HD 6990M Crossfire) vs 384 (T400).

Feature	Radeon HD 6990M Crossfire	T400
G3D Mark Score	3,500	3,609+3%
Architecture	Terascale 2	Turing
Process Node	40 nm	12 nm
Shading Units	2240+483%	384

✨

Advanced Features (DLSS/FSR)

Feature	Radeon HD 6990M Crossfire	T400
Upscaling Tech	FSR Upscaling / FSR 4	Upscaling support
Frame Generation	Not Supported	Not Supported
Ray Reconstruction	No	No
Low Latency	AMD Anti-Lag	Standard

💾

Video Memory (VRAM)

The Radeon HD 6990M Crossfire has 2 GB of VRAM, while the T400 carries 4 GB. T400 gives you 100% more memory capacity, which matters more once you move into heavier textures, mods, or higher resolutions. Memory bus width is 128-bit on the Radeon HD 6990M Crossfire and 64-bit on the T400.

Feature	Radeon HD 6990M Crossfire	T400
VRAM Capacity	2 GB	4 GB+100%
Memory Type	GDDR5	GDDR5
Bus Width	128-bit+100%	64-bit

🔌

Power & Dimensions

The Radeon HD 6990M Crossfire draws 50W versus the T400's 30W — a 50% difference. The T400 is more power-efficient. Recommended PSU: 350W (Radeon HD 6990M Crossfire) vs 350W (T400). Power connectors: 1x 6-pin vs PCIe-powered.

Feature	Radeon HD 6990M Crossfire	T400
TDP	50W	30W-40%
Recommended PSU	350W	350W
Power Connector	1x 6-pin	PCIe-powered
Length	0mm	—
Height	0mm	—
Slots	0	—
Temp (Load)	90	—
Perf/Watt	70.0	120.3+72%

💰

Value Analysis

At launch, the Radeon HD 6990M Crossfire came in at $699, while the T400 launched at $180. On MSRP, T400 was 74.2% cheaper ($519 less). Performance per dollar on MSRP (G3D Mark / MSRP): 5.0 (Radeon HD 6990M Crossfire) vs 20.1 (T400) — the T400 offers 302% better value. The newer card here is T400 (2021 vs 2011).

Feature	Radeon HD 6990M Crossfire	T400
MSRP	$699	$180-74%
Performance per Dollar	5.0	20.1+302%
Codename	Blackcomb XTX	TU117
Release	July 12 2011	May 6 2021
Ranking	#517	#532

Search Radeon HD 6990M Crossfire on Amazon

Search T400 on Amazon

Affiliate Disclosure

ChipVERSUS is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. We may earn a commission on qualifying purchases made through our links. This comes at no additional cost to you and helps support our work in providing comprehensive PC building guides and tools.

Amazon and the Amazon logo are trademarks of Amazon.com, Inc. or its affiliates.