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 6870 vs Radeon RX 640 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 6870 vs Radeon RX 640: 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 6870

2010

Why buy it

✅38.1% more average FPS across 50 tracked games in our benchmark data.

Trade-offs

❌Less VRAM, with 2 GB vs 4 GB for high-resolution textures and newer games.
❌No equivalent frame-generation stack like FSR Frame Generation + AFMF (2023).
❌2010 hardware with 2 GB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
❌
50.3% HIGHER MSRP
$239 MSRPvs$159 MSRP
❌Lower G3D Mark per dollar, at 9.2 vs 13.7 G3D/$ ($239 MSRP vs $159 MSRP).

Radeon RX 640

2019

Why buy it

✅Costs $80 less on MSRP ($159 MSRP vs $239 MSRP).
✅Delivers 48% more G3D Mark for each dollar spent, at 13.7 vs 9.2 G3D/$ ($159 MSRP vs $239 MSRP).
✅Access to a newer frame-generation stack with FSR Frame Generation + AFMF (2023).
✅100% more VRAM for high-resolution textures and newer games (4 GB vs 2 GB).
✅Radeon HD 6870 is already obsolete for modern gaming, so Radeon RX 640 is the less risky modern option long term.

Trade-offs

❌Lower average FPS than Radeon HD 6870 across 50 tracked games in our benchmark data.
❌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?

Radeon HD 6870 is the faster gaming card right now. In our data, it leads by 38.1% in average FPS across 50 tracked games in our benchmark data and by 1.6% in PassMark G3D (2,206 vs 2,172), so the answer here is pretty clean.

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

Radeon RX 640 is the safer long-term pick for 2026 and beyond. The case is simple: 4 GB vs 2 GB of VRAM, native frame generation with FSR Frame Generation + AFMF (2023), while Radeon HD 6870 has no comparable frame-generation support, a 14nm process instead of 40nm, and a newer 2019 generation instead of 2010. That gives it more room for heavier textures and higher settings over time.

Which GPU is the better buy today?

Radeon RX 640 makes the most sense to buy today. It is $80 cheaper on MSRP at $159 vs $239, and it leads G3D-per-dollar by 48% (13.7 vs 9.2), which is enough to swing the recommendation its way. Radeon HD 6870 still makes more sense if max raw gaming performance matters more than value.

Radeon HD 6870 vs Radeon RX 640 Technical Specifications

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

Radeon HD 6870

The Radeon HD 6870 is manufactured by AMD. It was released in October 21 2010. It features the TeraScale 2 architecture. The boost clock speed is 900 MHz. It has 1120 shading units. The thermal design power (TDP) is 151W. Manufactured using 40 nm process technology. G3D Mark benchmark score: 2,206 points. Launch price was $239.

Radeon RX 640

The Radeon RX 640 is manufactured by AMD. It was released in May 13 2019. It features the GCN 4.0 architecture. The core clock ranges from 1082 MHz to 1218 MHz. It has 640 shading units. The thermal design power (TDP) is 50W. Manufactured using 14 nm process technology. G3D Mark benchmark score: 2,172 points.

⚡

Graphics Performance

The Radeon HD 6870 scores 2,206 and the Radeon RX 640 reaches 2,172 in the G3D Mark benchmark — just a 1.6% difference, making them near-identical in rasterization performance. The Radeon HD 6870 is built on TeraScale 2 while the Radeon RX 640 uses GCN 4.0, both on 40 nm vs 14 nm. Shader units: 1,120 (Radeon HD 6870) vs 640 (Radeon RX 640). Raw compute: 2.016 TFLOPS (Radeon HD 6870) vs 1.559 TFLOPS (Radeon RX 640). Boost clocks: 900 MHz vs 1218 MHz.

Feature	Radeon HD 6870	Radeon RX 640
G3D Mark Score	2,206+2%	2,172
Architecture	TeraScale 2	GCN 4.0
Process Node	40 nm	14 nm
Shading Units	1120+75%	640
Compute (TFLOPS)	2.016 TFLOPS+29%	1.559 TFLOPS
Boost Clock	900 MHz	1218 MHz+35%
ROPs	32+100%	16
TMUs	56+40%	40
L1 Cache	224 KB+40%	160 KB
L2 Cache	512 KB	512 KB
Frame Generation	FSR upscaling	FSR 3 + AFMF

✨

Advanced Features (DLSS/FSR)

The clearest feature edge for the Radeon RX 640 is support for FSR Frame Generation + AFMF. In games that support it, that can smooth out motion and lift perceived FPS. The Radeon HD 6870 does not have comparable native support in the same tier.

Feature	Radeon HD 6870	Radeon RX 640
Upscaling Tech	FSR Upscaling / FSR 4	FSR 3
Frame Generation	Not Supported	FSR Frame Generation + AFMF
Ray Reconstruction	No	No
Low Latency	AMD Anti-Lag	AMD Anti-Lag

💾

Video Memory (VRAM)

The Radeon HD 6870 has 2 GB of VRAM, while the Radeon RX 640 carries 4 GB. Radeon RX 640 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 6870 and 128-bit on the Radeon RX 640.

Feature	Radeon HD 6870	Radeon RX 640
VRAM Capacity	2 GB	4 GB+100%
Memory Type	GDDR5	GDDR5
Memory Bandwidth	Unknown	Unknown
Bus Width	128-bit	128-bit
L2 Cache	512 KB	512 KB

🖥️

Display & API Support

DirectX support: 11.0 (Radeon HD 6870) vs 12 (FL 12_0) (Radeon RX 640). Vulkan: N/A vs 1.3. OpenGL: 4.4 vs 4.6. Maximum simultaneous displays: 6 vs 6.

Feature	Radeon HD 6870	Radeon RX 640
DirectX	11.0	12 (FL 12_0)+9%
Vulkan	N/A	1.3
OpenGL	4.4	4.6+5%
Max Displays	6	6

🎬

Media & Encoding

Hardware encoder: None (Radeon HD 6870) vs VCE 3.4 (Radeon RX 640). Decoder: UVD 3.0 vs UVD 6.3. Supported codecs: MPEG-2,VC-1,H.264,MPEG-4,MVC (Radeon HD 6870) vs H.264,H.265/HEVC (Radeon RX 640).

Feature	Radeon HD 6870	Radeon RX 640
Encoder	None	VCE 3.4
Decoder	UVD 3.0	UVD 6.3
Codecs	MPEG-2,VC-1,H.264,MPEG-4,MVC	H.264,H.265/HEVC

🔌

Power & Dimensions

The Radeon HD 6870 draws 151W versus the Radeon RX 640's 50W — a 100.5% difference. The Radeon RX 640 is more power-efficient. Recommended PSU: 500W (Radeon HD 6870) vs 350W (Radeon RX 640). Power connectors: 2x 6-pin vs PCIe-powered.

Feature	Radeon HD 6870	Radeon RX 640
TDP	151W	50W-67%
Recommended PSU	500W	350W-30%
Power Connector	2x 6-pin	PCIe-powered
Length	247mm	—
Height	111mm	—
Slots	2	1-50%
Temp (Load)	85	—
Perf/Watt	14.6	43.4+197%

💰

Value Analysis

At launch, the Radeon HD 6870 came in at $239, while the Radeon RX 640 launched at $159. On MSRP, Radeon RX 640 was 33.5% cheaper ($80 less). Performance per dollar on MSRP (G3D Mark / MSRP): 9.2 (Radeon HD 6870) vs 13.7 (Radeon RX 640) — the Radeon RX 640 offers 48.9% better value. The newer card here is Radeon RX 640 (2019 vs 2010).

Feature	Radeon HD 6870	Radeon RX 640
MSRP	$239	$159-33%
Performance per Dollar	9.2	13.7+49%
Codename	Barts	Polaris 23
Release	October 21 2010	May 13 2019
Ranking	#661	#665

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