ATI Radeon HD 4850 vs Iris Plus Graphics 655

Place in the ranking	654	804
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	0.21
Power efficiency	20.73	1.67
Architecture	Generation 9.5 (2016−2020)	TeraScale (2005−2013)
GPU code name	Coffee Lake GT3e	RV770
Market segment	Desktop	Desktop
Release date	3 April 2018 (6 years ago)	25 June 2008 (16 years ago)
Launch price (MSRP)	no data	$199

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

no data

Detailed specifications

General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores	384	800
Core clock speed	300 MHz	625 MHz
Boost clock speed	1050 MHz	no data
Number of transistors	189 million	956 million
Manufacturing process technology	14 nm+++	55 nm
Power consumption (TDP)	15 Watt	110 Watt
Texture fill rate	50.40	25.00
Floating-point processing power	0.8064 TFLOPS	1 TFLOPS
ROPs	6	16
TMUs	48	40

Form factor & compatibility

Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).

Interface	Ring Bus	PCIe 2.0 x16
Length	no data	246 mm
Width	IGP	1-slot
Supplementary power connectors	no data	1x 6-pin

VRAM capacity and type

Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.

Memory type	System Shared	GDDR3
Maximum RAM amount	System Shared	512 MB
Memory bus width	System Shared	256 Bit
Memory clock speed	System Shared	993 MHz
Memory bandwidth	no data	63.55 GB/s
Shared memory	+	-

Connectivity and outputs

Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.

Display Connectors

Portable Device Dependent

2x DVI, 1x S-Video

Supported technologies

Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.

Quick Sync

no data

API compatibility

List of supported 3D and general-purpose computing APIs, including their specific versions.

DirectX	12 (12_1)	10.1 (10_1)
Shader Model	6.4	4.1
OpenGL	4.6	3.3
OpenCL	3.0	1.1
Vulkan	1.3	N/A

Synthetic benchmark performance

Non-gaming benchmark results comparison. The combined score is measured on a 0-100 point scale.

Combined synthetic benchmark score

This is our combined benchmark score. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

Iris Plus Graphics 655 4.49
+68.8%

ATI HD 4850 2.66

Passmark

This is the most ubiquitous GPU benchmark. It gives the graphics card a thorough evaluation under various types of load, providing four separate benchmarks for Direct3D versions 9, 10, 11 and 12 (the last being done in 4K resolution if possible), and few more tests engaging DirectCompute capabilities.

Iris Plus Graphics 655 1733
+68.9%

ATI HD 4850 1026

3DMark Vantage Performance

3DMark Vantage is an outdated DirectX 10 benchmark using 1280x1024 screen resolution. It taxes the graphics card with two scenes, one depicting a girl escaping some militarized base located within a sea cave, the other displaying a space fleet attack on a defenseless planet. It was discontinued in April 2017, and Time Spy benchmark is now recommended to be used instead.

Iris Plus Graphics 655 12287
+36.9%

ATI HD 4850 8972

3DMark Cloud Gate GPU

Cloud Gate is an outdated DirectX 11 feature level 10 benchmark that was used for home PCs and basic notebooks. It displays a few scenes of some weird space teleportation device launching spaceships into unknown, using fixed resolution of 1280x720. Just like Ice Storm benchmark, it has been discontinued in January 2020 and replaced by 3DMark Night Raid.

Iris Plus Graphics 655 14343
+27.2%

ATI HD 4850 11272

3DMark Ice Storm GPU

Ice Storm Graphics is an obsolete benchmark, part of 3DMark suite. Ice Storm was used to measure entry level laptops and Windows-based tablets performance. It utilizes DirectX 11 feature level 9 to display a battle between two space fleets near a frozen planet in 1280x720 resolution. Discontinued in January 2020, it is now superseded by 3DMark Night Raid.

Iris Plus Graphics 655 137266
+88.3%

ATI HD 4850 72891

Gaming performance

Let's see how good the compared graphics cards are for gaming. Particular gaming benchmark results are measured in FPS.

Average FPS across all PC games

Here are the average frames per second in a large set of popular games across different resolutions:

900p	45−50 +55.2%	29 −55.2%
Full HD	19 −111%	40 +111%
1200p	30−35 +57.9%	19 −57.9%
1440p	12 +71.4%	7−8 −71.4%
4K	16 +77.8%	9−10 −77.8%

Cost per frame, $

1080p	no data	4.98
1440p	no data	28.43
4K	no data	22.11

FPS performance in popular games

Full HD
Low Preset

Cyberpunk 2077

7−8
+40%

5−6

−40%

Full HD
Medium Preset

Assassin's Creed Odyssey	12−14 +33.3%	9−10 −33.3%
Assassin's Creed Valhalla	4−5	0−1
Battlefield 5	10−11 +150%	4−5 −150%
Call of Duty: Modern Warfare	9−10 +28.6%	7−8 −28.6%
Cyberpunk 2077	7−8 +40%	5−6 −40%
Far Cry 5	9−10 +80%	5−6 −80%
Far Cry New Dawn	12−14 +71.4%	7−8 −71.4%
Forza Horizon 4	46 +254%	12−14 −254%
Hitman 3	10−11 +42.9%	7−8 −42.9%
Horizon Zero Dawn	27−30 +33.3%	21−24 −33.3%
Metro Exodus	9−10 +350%	2−3 −350%
Red Dead Redemption 2	10−12 +83.3%	6−7 −83.3%
Shadow of the Tomb Raider	23 +109%	10−12 −109%
Watch Dogs: Legion	40−45 +15.8%	35−40 −15.8%

Full HD
High Preset

Assassin's Creed Odyssey	12−14 +33.3%	9−10 −33.3%
Assassin's Creed Valhalla	4−5	0−1
Battlefield 5	10−11 +150%	4−5 −150%
Call of Duty: Modern Warfare	9−10 +28.6%	7−8 −28.6%
Cyberpunk 2077	7−8 +40%	5−6 −40%
Far Cry 5	9−10 +80%	5−6 −80%
Far Cry New Dawn	12−14 +71.4%	7−8 −71.4%
Forza Horizon 4	40 +208%	12−14 −208%
Hitman 3	10−11 +42.9%	7−8 −42.9%
Horizon Zero Dawn	27−30 +33.3%	21−24 −33.3%
Metro Exodus	9−10 +350%	2−3 −350%
Red Dead Redemption 2	10−12 +83.3%	6−7 −83.3%
Shadow of the Tomb Raider	17 +54.5%	10−12 −54.5%
The Witcher 3: Wild Hunt	16−18 +23.1%	12−14 −23.1%
Watch Dogs: Legion	40−45 +15.8%	35−40 −15.8%

Full HD
Ultra Preset

Assassin's Creed Odyssey	12−14 +33.3%	9−10 −33.3%
Assassin's Creed Valhalla	4−5	0−1
Call of Duty: Modern Warfare	9−10 +28.6%	7−8 −28.6%
Cyberpunk 2077	7−8 +40%	5−6 −40%
Far Cry 5	9−10 +80%	5−6 −80%
Forza Horizon 4	24−27 +100%	12−14 −100%
Hitman 3	10−11 +42.9%	7−8 −42.9%
Horizon Zero Dawn	10 −110%	21−24 +110%
Shadow of the Tomb Raider	15 +36.4%	10−12 −36.4%
The Witcher 3: Wild Hunt	6 −117%	12−14 +117%
Watch Dogs: Legion	40−45 +15.8%	35−40 −15.8%

Full HD
Epic Preset

Red Dead Redemption 2

10−12
+83.3%

6−7

−83.3%

1440p
High Preset

Battlefield 5	8−9 +100%	4−5 −100%
Far Cry New Dawn	6−7 +50%	4−5 −50%

1440p
Ultra Preset

Assassin's Creed Odyssey	4−5 +100%	2−3 −100%
Call of Duty: Modern Warfare	3−4 +50%	2−3 −50%
Cyberpunk 2077	2−3 +100%	1−2 −100%
Far Cry 5	5−6 +66.7%	3−4 −66.7%
Forza Horizon 4	6−7 +100%	3−4 −100%
Hitman 3	9−10 +12.5%	8−9 −12.5%
Horizon Zero Dawn	10−11 +42.9%	7−8 −42.9%
Metro Exodus	0−1	0−1
The Witcher 3: Wild Hunt	3−4 +50%	2−3 −50%
Watch Dogs: Legion	24−27 +62.5%	16−18 −62.5%

1440p
Epic Preset

Red Dead Redemption 2

8−9
+33.3%

6−7

−33.3%

4K
High Preset

Battlefield 5	3−4 +200%	1−2 −200%
Far Cry New Dawn	3−4 +200%	1−2 −200%
Hitman 3	0−1	0−1
Horizon Zero Dawn	1−2	0−1
Metro Exodus	1−2	0−1

4K
Ultra Preset

Assassin's Creed Odyssey	3−4 +50%	2−3 −50%
Assassin's Creed Valhalla	2−3 +100%	1−2 −100%
Call of Duty: Modern Warfare	2−3 +100%	1−2 −100%
Cyberpunk 2077	0−1	0−1
Far Cry 5	2−3 +100%	1−2 −100%
Forza Horizon 4	3−4 +200%	1−2 −200%
Watch Dogs: Legion	1−2	0−1

4K
Epic Preset

Red Dead Redemption 2

5−6
+25%

4−5

−25%

This is how Iris Plus Graphics 655 and ATI HD 4850 compete in popular games:

Iris Plus Graphics 655 is 55% faster in 900p
ATI HD 4850 is 111% faster in 1080p
Iris Plus Graphics 655 is 58% faster in 1200p
Iris Plus Graphics 655 is 71% faster in 1440p
Iris Plus Graphics 655 is 78% faster in 4K

Here's the range of performance differences observed across popular games:

in Metro Exodus, with 1080p resolution and the Medium Preset, the Iris Plus Graphics 655 is 350% faster.
in The Witcher 3: Wild Hunt, with 1080p resolution and the Ultra Preset, the ATI HD 4850 is 117% faster.

All in all, in popular games:

Iris Plus Graphics 655 is ahead in 55 tests (96%)
ATI HD 4850 is ahead in 2 tests (4%)

Pros & cons summary

Performance score	4.49	2.66
Recency	3 April 2018	25 June 2008
Chip lithography	14 nm	55 nm
Power consumption (TDP)	15 Watt	110 Watt

Iris Plus Graphics 655 has a 68.8% higher aggregate performance score, an age advantage of 9 years, a 292.9% more advanced lithography process, and 633.3% lower power consumption.

The Iris Plus Graphics 655 is our recommended choice as it beats the Radeon HD 4850 in performance tests.

Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.