Quadro K420 vs Radeon HD 6670

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.

Quadro K420 vs Radeon HD 6670 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.

Quadro K420 vs Radeon HD 6670: Pros, Cons & Final Verdict

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

Quadro K420

2014

Why buy it

✅Draws 108W instead of 250W, a 142W reduction.
✅More future proof: Kepler (2012−2018) on 28nm with a newer platform for upcoming games.

Trade-offs

❌Lower average FPS than Radeon HD 6670 across 50 tracked games in our benchmark data.
❌Less VRAM, with 1 GB vs 2 GB for high-resolution textures and newer games.
❌2014 hardware with 1 GB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
❌
51.5% HIGHER MSRP
$150 MSRPvs$99 MSRP
❌Lower G3D Mark per dollar, at 4.8 vs 7.3 G3D/$ ($150 MSRP vs $99 MSRP).

Radeon HD 6670

2010

Why buy it

✅3.7% more average FPS across 50 tracked games in our benchmark data.
✅Costs $51 less on MSRP ($99 MSRP vs $150 MSRP).
✅Delivers 51.3% more G3D Mark for each dollar spent, at 7.3 vs 4.8 G3D/$ ($99 MSRP vs $150 MSRP).
✅100% more VRAM for high-resolution textures and newer games (2 GB vs 1 GB).

Trade-offs

❌2010 hardware with 2 GB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
❌131.5% higher power demand at 250W vs 108W.

Quick Answers

Which GPU is faster for gaming right now?

Radeon HD 6670 is the faster gaming card right now. In our data, it leads by 3.7% in average FPS across 50 tracked games in our benchmark data. PassMark G3D leans toward Quadro K420 instead at 726 vs 725, so for this question the real-game FPS result matters more than the synthetic split.

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

Quadro K420 is the safer long-term pick for 2026 and beyond. The case is simple: a 28nm process instead of 40nm and a newer 2014 generation instead of 2010. That makes it the less risky pick as game demands keep moving.

Which GPU is the better buy today?

Radeon HD 6670 makes the most sense to buy today. It is $51 cheaper on MSRP at $99 vs $150, and it leads G3D-per-dollar by 51.3% (7.3 vs 4.8), so the value case lines up with the gaming result. If you are mainly targeting 1080p and some 1440p, Radeon HD 6670 is the easier value choice. If you care more about 1080p and some 1440p headroom, Quadro K420 has the stronger long-term case.

Quadro K420 vs Radeon HD 6670 Technical Specifications

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

Quadro K420

The Quadro K420 is manufactured by NVIDIA. It was released in July 22 2014. It features the Kepler architecture. The core clock ranges from 771 MHz to 784 MHz. It has 1344 shading units. The thermal design power (TDP) is 108W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 726 points. Launch price was $854.99.

Radeon HD 6670

The Radeon HD 6670 is manufactured by AMD. It was released in December 14 2010. It features the TeraScale 3 architecture. The boost clock speed is 880 MHz. It has 1536 shading units. The thermal design power (TDP) is 250W. Manufactured using 40 nm process technology. G3D Mark benchmark score: 725 points. Launch price was $369.

⚡

Graphics Performance

The Quadro K420 scores 726 and the Radeon HD 6670 reaches 725 in the G3D Mark benchmark — just a 0.1% difference, making them near-identical in rasterization performance. The Quadro K420 is built on Kepler while the Radeon HD 6670 uses TeraScale 3, both on 28 nm vs 40 nm. Shader units: 1,344 (Quadro K420) vs 1,536 (Radeon HD 6670). Raw compute: 2.107 TFLOPS (Quadro K420) vs 2.703 TFLOPS (Radeon HD 6670). Boost clocks: 784 MHz vs 880 MHz.

Feature	Quadro K420	Radeon HD 6670
G3D Mark Score	726	725
Architecture	Kepler	TeraScale 3
Process Node	28 nm	40 nm
Shading Units	1344	1536+14%
Compute (TFLOPS)	2.107 TFLOPS	2.703 TFLOPS+28%
Boost Clock	784 MHz	880 MHz+12%
ROPs	32	32
TMUs	112+17%	96
L1 Cache	112 KB	192 KB+71%
L2 Cache	512 KB	512 KB

✨

Advanced Features (DLSS/FSR)

Feature	Quadro K420	Radeon HD 6670
Upscaling Tech	Upscaling support	FSR Upscaling / FSR 4
Frame Generation	Not Supported	Not Supported
Ray Reconstruction	No	No
Low Latency	Standard	AMD Anti-Lag

💾

Video Memory (VRAM)

The Quadro K420 has 1 GB of VRAM, while the Radeon HD 6670 carries 2 GB. Radeon HD 6670 gives you 100% more memory capacity, which matters more once you move into heavier textures, mods, or higher resolutions. Memory bus width is 64-bit on the Quadro K420 and 128-bit on the Radeon HD 6670.

Feature	Quadro K420	Radeon HD 6670
VRAM Capacity	1 GB	2 GB+100%
Memory Type	GDDR5	GDDR5
Bus Width	64-bit	128-bit+100%
L2 Cache	512 KB	512 KB

🔌

Power & Dimensions

The Quadro K420 draws 108W versus the Radeon HD 6670's 250W — a 79.3% difference. The Quadro K420 is more power-efficient. Recommended PSU: 350W (Quadro K420) vs 250W (Radeon HD 6670). Power connectors: PCIe-powered vs None.

Feature	Quadro K420	Radeon HD 6670
TDP	108W-57%	250W
Recommended PSU	350W	250W-29%
Power Connector	PCIe-powered	None
Length	—	168mm
Height	—	111mm
Slots	—	1
Temp (Load)	—	75
Perf/Watt	6.7+131%	2.9

💰

Value Analysis

At launch, the Quadro K420 came in at $150, while the Radeon HD 6670 launched at $99. On MSRP, Radeon HD 6670 was 34% cheaper ($51 less). Performance per dollar on MSRP (G3D Mark / MSRP): 4.8 (Quadro K420) vs 7.3 (Radeon HD 6670) — the Radeon HD 6670 offers 52.1% better value. The newer card here is Quadro K420 (2014 vs 2010).

Feature	Quadro K420	Radeon HD 6670
MSRP	$150	$99-34%
Performance per Dollar	4.8	7.3+52%
Codename	GK104	Cayman
Release	July 22 2014	December 14 2010
Ranking	#475	#596

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