Radeon HD 6490M vs HD 7990
Aggregate performance score
We've compared Radeon HD 7990 with Radeon HD 6490M, including specs and performance data.
HD 7990 outperforms HD 6490M by a whopping 1379% based on our aggregate benchmark results.
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 416 | 1186 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 1.33 | 0.01 |
| Power efficiency | 2.73 | no data |
| Architecture | GCN 1.0 (2012−2020) | TeraScale 2 (2009−2015) |
| GPU code name | Malta | Seymour |
| Market segment | Desktop | Laptop |
| Release date | 24 April 2013 (12 years ago) | 4 January 2011 (15 years ago) |
| Launch price (MSRP) | $999 | $1,193.03 |
Cost-effectiveness evaluation
The higher the ratio, the better. We use the manufacturer's recommended prices.
HD 7990 has 13200% better value for money than HD 6490M.
Performance to price scatter graph
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 | 2048 ×2 | 160 |
| Core clock speed | 950 MHz | 800 MHz |
| Boost clock speed | 1000 MHz | no data |
| Number of transistors | 4,313 million | 370 million |
| Manufacturing process technology | 28 nm | 40 nm |
| Power consumption (TDP) | 375 Watt | no data |
| Texture fill rate | 128.0 ×2 | 6.400 |
| Floating-point processing power | 4.096 TFLOPS ×2 | 0.256 TFLOPS |
| ROPs | 32 ×2 | 4 |
| TMUs | 128 ×2 | 8 |
| L1 Cache | 512 KB | 16 KB |
| L2 Cache | 768 KB | 128 KB |
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 | PCIe 3.0 x16 | PCIe 2.0 x16 |
| Length | 307 mm | no data |
| Width | 2-slot | no data |
| Supplementary power connectors | 2x 8-pin | no data |
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 | GDDR5 | GDDR5 |
| Maximum RAM amount | 3 GB ×2 | 512 MB |
| Memory bus width | 384 Bit ×2 | 64 Bit |
| Memory clock speed | 1500 MHz | 800 MHz |
| Memory bandwidth | 288.0 GB/s ×2 | 25.6 GB/s |
| Shared memory | - | - |
Connectivity and outputs
This section shows the types and number of video connectors on each GPU. The data applies specifically to desktop reference models (for example, NVIDIA’s Founders Edition). OEM partners often modify both the number and types of ports. On notebook GPUs, video‐output options are determined by the laptop’s design rather than the graphics chip itself.
| Display Connectors | 1x DVI, 4x mini-DisplayPort | No outputs |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 12 (11_1) | 11.2 (11_0) |
| Shader Model | 5.1 | 5.0 |
| OpenGL | 4.6 | 4.4 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | 1.2.131 | N/A |
Synthetic benchmarks
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.
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.
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:
| Full HD | 280−290
+1374%
| 19
−1374%
|
Cost per frame, $
| 1080p | 3.57
+1660%
| 62.79
−1660%
|
- HD 7990 has 1660% lower cost per frame in 1080p
FPS performance in popular games
Full HD
Low
| Cyberpunk 2077 | 2−3
+0%
|
2−3
+0%
|
Full HD
Medium
| Cyberpunk 2077 | 2−3
+0%
|
2−3
+0%
|
| Far Cry 5 | 1−2
+0%
|
1−2
+0%
|
| Fortnite | 1−2
+0%
|
1−2
+0%
|
| Forza Horizon 4 | 6−7
+0%
|
6−7
+0%
|
| Forza Horizon 5 | 0−1 | 0−1 |
| PLAYERUNKNOWN'S BATTLEGROUNDS | 8−9
+0%
|
8−9
+0%
|
| Valorant | 30−33
+0%
|
30−33
+0%
|
Full HD
High
| Counter-Strike: Global Offensive | 21−24
+0%
|
21−24
+0%
|
| Cyberpunk 2077 | 2−3
+0%
|
2−3
+0%
|
| Dota 2 | 14−16
+0%
|
14−16
+0%
|
| Far Cry 5 | 1−2
+0%
|
1−2
+0%
|
| Fortnite | 1−2
+0%
|
1−2
+0%
|
| Forza Horizon 4 | 6−7
+0%
|
6−7
+0%
|
| Forza Horizon 5 | 0−1 | 0−1 |
| Metro Exodus | 1−2
+0%
|
1−2
+0%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 8−9
+0%
|
8−9
+0%
|
| The Witcher 3: Wild Hunt | 6−7
+0%
|
6−7
+0%
|
| Valorant | 30−33
+0%
|
30−33
+0%
|
Full HD
Ultra
| Cyberpunk 2077 | 2−3
+0%
|
2−3
+0%
|
| Dota 2 | 14−16
+0%
|
14−16
+0%
|
| Far Cry 5 | 1−2
+0%
|
1−2
+0%
|
| Forza Horizon 4 | 6−7
+0%
|
6−7
+0%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 8−9
+0%
|
8−9
+0%
|
| The Witcher 3: Wild Hunt | 6−7
+0%
|
6−7
+0%
|
| Valorant | 30−33
+0%
|
30−33
+0%
|
Full HD
Epic
| Fortnite | 1−2
+0%
|
1−2
+0%
|
1440p
High
| Counter-Strike 2 | 4−5
+0%
|
4−5
+0%
|
| Counter-Strike: Global Offensive | 5−6
+0%
|
5−6
+0%
|
| PLAYERUNKNOWN'S BATTLEGROUNDS | 10−11
+0%
|
10−11
+0%
|
1440p
Ultra
| Cyberpunk 2077 | 0−1 | 0−1 |
| Far Cry 5 | 0−1 | 0−1 |
| Forza Horizon 4 | 3−4
+0%
|
3−4
+0%
|
| The Witcher 3: Wild Hunt | 2−3
+0%
|
2−3
+0%
|
1440p
Epic
| Fortnite | 1−2
+0%
|
1−2
+0%
|
4K
High
| Grand Theft Auto V | 14−16
+0%
|
14−16
+0%
|
| Valorant | 4−5
+0%
|
4−5
+0%
|
4K
Ultra
| PLAYERUNKNOWN'S BATTLEGROUNDS | 2−3
+0%
|
2−3
+0%
|
4K
Epic
| Fortnite | 2−3
+0%
|
2−3
+0%
|
This is how HD 7990 and HD 6490M compete in popular games:
- HD 7990 is 1374% faster in 1080p
All in all, in popular games:
- there's a draw in 35 tests (100%)
Pros & cons summary
| Performance score | 13.31 | 0.90 |
| Recency | 24 April 2013 | 4 January 2011 |
| Maximum RAM amount | 3 GB | 512 MB |
| Chip lithography | 28 nm | 40 nm |
HD 7990 has a 1379% higher aggregate performance score, an age advantage of 2 years, a 500% higher maximum VRAM amount, and a 43% more advanced lithography process.
The Radeon HD 7990 is our recommended choice as it beats the Radeon HD 6490M in performance tests.
Be aware that Radeon HD 7990 is a desktop graphics card while Radeon HD 6490M is a notebook one.
Other comparisons
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