Disassembled GPU PCB with exposed thermal pads lit by overhead softbox, solder points glinting

Benchmark Lab / Issue 47 / 2026

Issue 47 · February 2026

The 2024 Thermal Report — 38 GPUs, 912 Hours of Testing, One Spreadsheet to Rule Them All.

BENCH LAB, AUSTIN TX·FEB 26, 2026·VOL. 12 NO. 47

We pulled 38 partner cards from seven AIB vendors, wired every board to a custom thermocouple harness, and ran 24-hour stress loops until the fans screamed. What follows is the unabridged record.

Read the Report Get Full Dataset

GPUs Tested

912h

Test Hours

14,400

Data Points

Chapter 01 / Methodology

"Before a single product recommendation, you deserve to know exactly how the data was made."

Every card in this report was purchased anonymously from retail channels — no vendor samples, no early access units, no NDA strings. We test what you buy.

The test cell holds ambient temperature to 22°C ± 0.5°C via a dedicated HVAC unit. Each GPU runs a 24-hour FurMark stress cycle three times. We report the median of the three runs and discard the first 10 minutes of each run as thermal soak.

"No vendor samples. No NDA strings. We test what you buy, when you buy it."

Equipment Specification

Thermocouple ArrayOmega TC-08 · 8-channel USB · ±0.5°C accuracy

Load GeneratorFurMark 2.4 + custom CUDA kernels

Power MeasurementYokogawa WT310E · 0.1% accuracy

Ambient Control22°C ± 0.5°C climate-controlled test cell

Acoustic MeterBrüel & Kjær 2250 · A-weighted dB(A)

Test Duration24h per card · 3 runs · median reported

Thermocouple wires attached to GPU heatsink in test cell

Thermocouple harness, Rig A

Power measurement equipment connected to GPU test bench

Power draw logging, Rig B

PCB closeup of GPU components under macro lens

VRM teardown documentation

Chapter 02 / GPU Thermals

"The ASUS ROG Strix 4080 Super runs 14°C cooler than the worst card in its class — same GPU, different heatsink."

Peak Junction Temperature (°C) — 24h Stress / FurMark 2.4

1ASUS ROG Strix RTX 4080 Super71°C

2MSI Gaming X Trio RTX 4080 Super73°C

3Gigabyte Aorus Master RTX 4080 Super74°C

4Sapphire Nitro+ RTX 4080 Super76°C

5Palit GameRock RTX 408079°C

6PowerColor Red Devil RX 7900 XTX82°C

7XFX Speedster MERC RX 7900 XTX85°C

8ASUS TUF Gaming RTX 4070 Ti Super68°C

0°C90°C

Full Comparison Table — 8 Selected Cards

#	Card / Vendor	Max Temp	Avg Temp	Peak Power	Noise dB(A)	Verdict
1	ASUS ROG Strix RTX 4080 Super	71°C	67°C	320W	38	EXCELLENT
2	MSI Gaming X Trio RTX 4080 Super	73°C	69°C	318W	36	EXCELLENT
3	Gigabyte Aorus Master RTX 4080 Super	74°C	70°C	321W	39	GOOD
4	Sapphire Nitro+ RTX 4080 Super	76°C	71°C	316W	37	GOOD
5	Palit GameRock RTX 4080	79°C	74°C	305W	42	AVERAGE
6	PowerColor Red Devil RX 7900 XTX	82°C	77°C	355W	44	AVERAGE
7	XFX Speedster MERC RX 7900 XTX	85°C	80°C	360W	47	POOR
8	ASUS TUF Gaming RTX 4070 Ti Super	68°C	64°C	285W	34	EXCELLENT

* All cards tested at stock clocks, 22°C ambient, open-air test bench. Median of 3 × 24h runs.

GPU heatsink teardown showing copper heatpipes and vapor chamber spread

Teardown Note

Why the ROG Strix Runs Cool: A Vapor Chamber Analysis

The Strix's 340mm² vapor chamber covers 94% of the GPU die — compared to 61% on the GameRock. Heat spreads laterally before it ever reaches a heatpipe. The delta is not brand loyalty. It's physics.

Vapor Chamber Coverage94%vs61%

Heatpipe Count10vs6

Fan Diameter92mm × 3vs80mm × 3

Chapter 03 / Peripherals

"Hall-effect switches don't wear out. After 10,000 actuations on five boards, the Wooting's latency variance was still under 0.05ms."

Switch Input Latency (ms) — 10,000 Actuation Average

Razer Analog v3(Optical)Top Pick0.2ms

Wooting 60HE+(Hall Effect)Fastest0.1ms

SteelSeries OmniPoint 2(Magnetic)Reliable0.3ms

Cherry MX Speed Silver(Mechanical)Budget0.8ms

Gateron KS-20 Pro(Optical)Value0.2ms

Keyboard Switch Specification Table

Switch	Type	Actuation (g)	Pre-Travel	Total Travel	Rated Life	Latency
Razer Analog v3	Optical	35g	1.5mm	3.5mm	90M	0.2ms
Wooting 60HE+	Hall Effect	38g	1.5mm	4mm	Unlimited	0.1ms
SteelSeries OmniPoint 2	Magnetic	45g	1.8mm	4mm	100M	0.3ms
Cherry MX Speed Silver	Mechanical	45g	1.2mm	3.4mm	100M	0.8ms
Gateron KS-20 Pro	Optical	40g	1.5mm	3.5mm	100M	0.2ms

Gaming Mouse Comparison — Polling Rate & Latency

Mouse	Polling	Weight	Latency
Logitech G Pro X Superlight 2 HERO 25K	500Hz	60g	1ms
Razer DeathAdder V3 Pro Focus Pro 30K	4000Hz	63g	0.25ms
Zowie EC2-C 3395	1000Hz	73g	1ms
Pulsar X2 Mini PAW3395	1000Hz	52g	1ms

Mechanical keyboard switches under macro lens showing actuation mechanism

"We actuated each switch 10,000 times before logging a single data point. Break-in is real. Day-one numbers are marketing."

Chapter 04 / Storage

"PCIe 5.0 doubles sequential throughput but runs 12°C hotter under load. For gaming, the 4.0 flagship is still the rational choice."

Sequential Read Speed (MB/s) — CrystalDiskMark 8.0 / 1GiB

1Samsung 990 Pro 2TBFlagship7.5 GB/s

2WD Black SN850X 2TBFlagship7.3 GB/s

3Crucial T705 2TBPCIe 514.5 GB/s

4Seagate FireCuda 530 2TBValue7.3 GB/s

5Kingston Fury Renegade 2TBValue7.3 GB/s

Full Drive Specification & Benchmark Table

#	Drive	Interface	Seq Read	Seq Write	4K Rand R	Temp (Load)	Price
1	Samsung 990 Pro 2TB	PCIe 4.0 x4	7.5 GB/s	6.9 GB/s	1400 IOPS	62°C	$149
2	WD Black SN850X 2TB	PCIe 4.0 x4	7.3 GB/s	6.6 GB/s	1200 IOPS	58°C	$139
3	Crucial T705 2TB	PCIe 5.0 x4	14.5 GB/s	12.7 GB/s	1800 IOPS	74°C	$199
4	Seagate FireCuda 530 2TB	PCIe 4.0 x4	7.3 GB/s	6.9 GB/s	1000 IOPS	65°C	$119
5	Kingston Fury Renegade 2TB	PCIe 4.0 x4	7.3 GB/s	7.0 GB/s	1050 IOPS	61°C	$129

Lab Insight

The PCIe 5.0 Heat Problem

The Crucial T705 posted the highest sequential numbers in our lab history — 14.5 GB/s read. It also hit 74°C under sustained load without a heatsink, throttling to 9.8 GB/s after 90 seconds. With the included heatsink: 68°C, no throttle. Install the heatsink.

IT Procurement Note

Bulk-Buy Recommendation

For workstation deployments over 50 units, the WD Black SN850X at $139 offers the best combination of performance, thermals, and 5-year warranty coverage. Samsung's 990 Pro edges it on random write but carries a 15% price premium at volume.

Full Dataset

Every test run.
Every data point.

The spreadsheet behind this report contains 14,400 individual data points — temperature logs at 1-second intervals, power draw curves, acoustic measurements, and raw 4K benchmark files. It's yours, free.

14,400 temperature data points

38 GPU full benchmark logs

Raw FurMark output files

Power draw CSVs (1-second granularity)

Acoustic measurement sheets

Chapter 05 / Editor's Picks

"Five products. One sentence each. The spreadsheet earned them."

ASUS ROG Strix GPU with exposed heatsink fins

Best GPU Overall

ASUS ROG Strix RTX 4080 Super OC

Graphics Card · $849

Runs 14°C cooler than the class average with near-silent acoustics under full load — the vapor chamber simply works.

Max Temp

71°C

Noise

38 dB(A)

Power

320W

Mechanical keyboard close up with RGB backlighting

Best for Competitive FPS

Wooting 60HE+ Keyboard

Keyboard · $174

Hall-effect switches with 0.1ms latency variance and infinite actuation life — the last keyboard you need to buy.

Latency

0.1ms

Actuation

38g

Life

Unlimited

Best Mouse

Razer DeathAdder V3 Pro

Mouse · $159

4000Hz polling and 0.25ms wireless latency erases any gap between wired and wireless for competitive play.

Polling

4000Hz

Latency

0.25ms

Weight

63g

NVMe SSD drive with PCIe connector visible

Best Storage (Value)

WD Black SN850X 2TB

NVMe SSD · $139

Best thermal profile in its class, 5-year warranty, and consistently reproducible benchmark results across three units.

Seq Read

7.3 GB/s

Load Temp

58°C

Warranty

5 years

Samsung SSD storage device on clean white surface

IT Procurement Pick

Samsung 990 Pro 2TB (50+ units)

NVMe SSD · $149 / unit

Highest random IOPS in the test pool, consistent batch-to-batch performance, and Samsung's enterprise support channel.

4K Rand R

1,400K IOPS

Batch Variance

±1.2%

Support

Enterprise

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