Radeon R9 M385X vs GeForce GT 645

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.

Value Upgrade Path

This is the official ChipVERSUS Value Rating, comparing raw performance (G3D Mark) per dollar. Components placed above yours deliver better value for money. The Radeon R9 M385X is positioned at rank 429 and the GeForce GT 645 is on rank 242, so the GeForce GT 645 offers better cost-efficiency for playing games.

MSRP is the manufacturer's suggested retail price.•
Avg price is the current average price collected from markets across the web.

Performance Per Dollar Radeon R9 M385X

#419

Radeon RX 550X (móvel)

MSRP: $35|Avg: $35

1633%

#421

GeForce GTX 1070 with Max-Q Design

MSRP: N/A|Avg: $150

1480%

#422

GeForce GTX 1060 with Max-Q Design

MSRP: N/A|Avg: $100

1476%

#426

GeForce GTX 1050 (Mobile)

MSRP: N/A|Avg: $50

1342%

#427

Radeon RX 6300

MSRP: $60|Avg: $40

1333%

#429

Radeon R9 M385X

MSRP: $300|Avg: $300

100%

#431

Radeon R5 M430

MSRP: $99|Avg: $20

99%

#432

Mobility Radeon HD 5570

MSRP: $80|Avg: $20

99%

#433

GeForce 810A

MSRP: $100|Avg: $20

98%

#434

GeForce GT 520MX

MSRP: $45|Avg: $10

97%

#435

Radeon R5 330

MSRP: $81|Avg: $45

97%

#437

Radeon HD 8450G + 8750M Dual

MSRP: $100|Avg: $100

96%

#438

Radeon R3

MSRP: $50|Avg: $50

94%

#439

Radeon HD 7520G + HD 8600/8700M Dual

MSRP: $100|Avg: $100

94%

#441

Radeon HD 8550G + 8600M Dual

MSRP: $100|Avg: $100

93%

#443

Radeon R9 M360

MSRP: $300|Avg: $81

91%

#444

Radeon HD 8550G + 7600M Dual

MSRP: $150|Avg: $50

90%

Based on actual market prices and performance benchmarks.

Performance Per Dollar GeForce GT 645

#54

Radeon RX 6800S

MSRP: $800|Avg: $800

98%

#232

Radeon RX 550X (móvel)

MSRP: $35|Avg: $35

536%

#234

GeForce GTX 1070 with Max-Q Design

MSRP: N/A|Avg: $150

486%

#235

GeForce GTX 1060 with Max-Q Design

MSRP: N/A|Avg: $100

485%

#239

GeForce GTX 1050 (Mobile)

MSRP: N/A|Avg: $50

441%

#240

Radeon RX 6300

MSRP: $60|Avg: $40

438%

#242

GeForce GT 645

MSRP: $99|Avg: $15

100%

#252

GeForce 720A

MSRP: $30|Avg: $30

95%

#253

GeForce GT 520M

MSRP: $60|Avg: N/A

93%

#254

Radeon Vega 8 Ryzen 3 3200GE

MSRP: $99|Avg: $60

93%

#257

GeForce GTX 770M SLI

MSRP: N/A|Avg: $80

92%

Based on actual market prices and performance benchmarks.

Performance Comparison

About G3D Mark

🏆 Chipversus Verdict

🚀 Performance Leadership

The GeForce GT 645 is the superior choice for raw performance. It leads with a 0.6% higher G3D Mark score and 300% more VRAM (2 GB vs 512 MB). This advantage makes it significantly better for higher resolutions (1440p/4K) and graphic-intensive titles compared to the Radeon R9 M385X.

Insight	Radeon R9 M385X	GeForce GT 645
Performance	❌Lower raw frame rates (-0.6%)	✅Leading raw performance (+0.6%)
Longevity	🛑Obsolete Architecture (2015 / GCN 2.0 (2013−2017))	🛑Obsolete Architecture (2012 / Kepler (2012−2018))
Ecosystem	Supports FSR Upscaling	Supports FSR Upscaling
VRAM	❌ Less VRAM capacity	✅ More VRAM (+300%)
Efficiency	⚡ Higher Power Consumption	💡 Excellent Perf/Watt
Case Fit	—	📏 Compact / SFF Friendly

💎 Value Proposition

The GeForce GT 645 offers a compelling cost-to-performance ratio. While both GPUs are considered legacy components by modern standards, the GeForce GT 645 holds the technical lead. Priced at $15 (vs $300), it costs 95% less, resulting in a 1912% higher cost efficiency score.

Insight	Radeon R9 M385X	GeForce GT 645
Cost Efficiency	❌Lower cost efficiency	✅Better overall value (+1912%)
Upfront Cost	⚠️Higher upfront cost ($300)	✅More affordable ($15)

Performance Check

Real-world benchmarks and performance projections based on comprehensive hardware analysis and comparative metrics. Values represent expected performance on High/Ultra settings at 1080p, 1440p, and 4K. Modeled using a Ryzen 7 7800X3D reference profile to minimize specific CPU bottlenecks.

Note: Performance behavior can vary per game. Specific architectures may perform better or worse depending on game engine optimizations and API implementation.

Radeon R9 M385X Benchmark Check

GeForce GT 645 Benchmark Check

Technical Specifications

Side-by-side comparison of Radeon R9 M385X and GeForce GT 645

Radeon R9 M385X

The Radeon R9 M385X is manufactured by AMD. It was released in May 5 2015. It features the GCN 2.0 architecture. The core clock ranges from 1000 MHz to 1100 MHz. It has 896 shading units. The thermal design power (TDP) is 75W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 1,994 points.

GeForce GT 645

The GeForce GT 645 is manufactured by NVIDIA. It was released in October 1 2012. It features the Kepler architecture. The core clock speed is Up to 710 MHz. It has 384 shading units. The thermal design power (TDP) is 32W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 2,006 points.

⚡

Graphics Performance

The Radeon R9 M385X scores 1,994 and the GeForce GT 645 reaches 2,006 in the G3D Mark benchmark — just a 0.6% difference, making them near-identical in rasterization performance. The Radeon R9 M385X is built on GCN 2.0 while the GeForce GT 645 uses Kepler, both on a 28 nm process. Shader units: 896 (Radeon R9 M385X) vs 384 (GeForce GT 645). Raw compute: 1.971 TFLOPS (Radeon R9 M385X) vs 0.5445 TFLOPS (GeForce GT 645).

Feature	Radeon R9 M385X	GeForce GT 645
G3D Mark Score	1,994	2,006
Architecture	GCN 2.0	Kepler
Process Node	28 nm	28 nm
Shading Units	896+133%	384
Compute (TFLOPS)	1.971 TFLOPS+262%	0.5445 TFLOPS
ROPs	16	16
TMUs	56+75%	32
L1 Cache	224 KB+600%	32 KB
L2 Cache	256 KB	256 KB

✨

Advanced Features (DLSS/FSR)

Feature	Radeon R9 M385X	GeForce GT 645
Upscaling Tech	FSR 1.0 (Software)	FSR 1.0 (Software)
Frame Generation	Not Supported	Not Supported
Ray Reconstruction	No	No
Low Latency	AMD Anti-Lag	Standard

💾

Video Memory (VRAM)

The Radeon R9 M385X comes with 512 MB of VRAM, while the GeForce GT 645 has 2 GB. The GeForce GT 645 offers 300% more capacity, crucial for higher resolutions and texture-heavy games. Bus width: 128-bit vs 128-bit.

Feature	Radeon R9 M385X	GeForce GT 645
VRAM Capacity	0.5 GB	2 GB+300%
Memory Type	GDDR5	GDDR5
Memory Bandwidth	Unknown	Unknown
Bus Width	128-bit	128-bit
L2 Cache	256 KB	256 KB

🖥️

Display & API Support

DirectX support: 12 (12_0) (Radeon R9 M385X) vs 12 (11_0) (GeForce GT 645). Vulkan: 1.2 vs 1.2. OpenGL: 4.6 vs 4.6. Maximum simultaneous displays: 4 vs 3.

Feature	Radeon R9 M385X	GeForce GT 645
DirectX	12 (12_0)	12 (11_0)
Vulkan	1.2	1.2
OpenGL	4.6	4.6
Max Displays	4+33%	3

🎬

Media & Encoding

Hardware encoder: VCE 2.0 (Radeon R9 M385X) vs NVENC (1st Gen) (GeForce GT 645). Decoder: UVD 4.2 vs NVDEC (1st Gen). Supported codecs: H.264,MPEG-4,VC-1,MPEG-2 (Radeon R9 M385X) vs H.264,MPEG-2,VC-1 (GeForce GT 645).

Feature	Radeon R9 M385X	GeForce GT 645
Encoder	VCE 2.0	NVENC (1st Gen)
Decoder	UVD 4.2	NVDEC (1st Gen)
Codecs	H.264,MPEG-4,VC-1,MPEG-2	H.264,MPEG-2,VC-1

🔌

Power & Dimensions

The Radeon R9 M385X draws 75W versus the GeForce GT 645's 32W — a 80.4% difference. The GeForce GT 645 is more power-efficient. Recommended PSU: 350W (Radeon R9 M385X) vs 350W (GeForce GT 645). Power connectors: Mobile vs PCIe-powered. Card length: 0mm vs 145mm, occupying 0 vs 1 slots. Typical load temperature: 85 vs 80.

Feature	Radeon R9 M385X	GeForce GT 645
TDP	75W	32W-57%
Recommended PSU	350W	350W
Power Connector	Mobile	PCIe-powered
Length	0mm	145mm
Height	0mm	111mm
Slots	0-100%	1
Temp (Load)	85	80-6%
Perf/Watt	26.6	62.7+136%

💰

Value Analysis

The Radeon R9 M385X launched at $300 MSRP and currently averages $300, while the GeForce GT 645 launched at $99 and now averages $15. The GeForce GT 645 costs 95% less ($285 savings) at current market prices. Performance per dollar (G3D Mark / price): 6.6 (Radeon R9 M385X) vs 133.7 (GeForce GT 645) — the GeForce GT 645 offers 1925.8% better value. The Radeon R9 M385X is the newer GPU (2015 vs 2012).