Radeon HD 7990 vs Radeon R9 280X
If you are going to buy a new graphics card and are choosing between Radeon HD 7990 and Radeon R9 280X, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the Radeon HD 7990 stacks up against Radeon R9 280X, check out specs charts below.
Main Specs
Radeon HD 7990
Radeon R9 280X
Power consumption (TDP)
375 Watt
250 Watt
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
2x 8-pin
1 x 6-pin + 1 x 8-pin
Memory type
GDDR5
GDDR5
Maximum RAM amount
3 GB
3 GB
Display Connectors
1x DVI, 4x mini-DisplayPort
2x DVI, 1x HDMI, 1x DisplayPort
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Radeon HD 7990 has 50% more power consumption, than Radeon R9 280X.
Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
Radeon HD 7990 and Radeon R9 280X have maximum RAM of 3 GB.
Both cards are used in Desktops.
Radeon HD 7990 is build with GCN 1.0 architecture, and Radeon R9 280X - with GCN.
Radeon HD 7990 and Radeon R9 280X are manufactured by 28 nm process technology.
Radeon HD 7990 is 32 mm longer, than Radeon R9 280X.
Game benchmarks
Assassin's Creed Odyssey
Battlefield 5
Call of Duty: Warzone
Counter-Strike: Global Offensive
Cyberpunk 2077
Dota 2
Far Cry 5
Fortnite
Forza Horizon 4
Grand Theft Auto V
Metro Exodus
Minecraft
PLAYERUNKNOWN'S BATTLEGROUNDS
Red Dead Redemption 2
The Witcher 3: Wild Hunt
World of Tanks
high / 1080p
35−40
35−40
ultra / 1080p
21−24
21−24
QHD / 1440p
16−18
16−18
4K / 2160p
10−11
10−11
low / 720p
60−65
60−65
medium / 1080p
40−45
40−45
Radeon HD 7990 and Radeon R9 280X have the same average FPS in Assassin's Creed Odyssey.
high / 1080p
55−60
55−60
ultra / 1080p
45−50
45−50
QHD / 1440p
35−40
35−40
4K / 2160p
18−20
18−20
low / 720p
100−110
100−110
medium / 1080p
60−65
60−65
Radeon HD 7990 and Radeon R9 280X have the same average FPS in Battlefield 5.
low / 768p
50−55
50−55
QHD / 1440p
0−1
0−1
Radeon HD 7990 and Radeon R9 280X have the same average FPS in Call of Duty: Warzone.
low / 768p
250−260
250−260
medium / 768p
220−230
220−230
ultra / 1080p
180−190
180−190
QHD / 1440p
110−120
110−120
4K / 2160p
70−75
70−75
high / 768p
210−220
210−220
Radeon HD 7990 and Radeon R9 280X have the same average FPS in Counter-Strike: Global Offensive.
low / 768p
60−65
60−65
medium / 1080p
55−60
55−60
Radeon HD 7990 and Radeon R9 280X have the same average FPS in Cyberpunk 2077.
low / 768p
120−130
120−130
medium / 768p
110−120
110−120
ultra / 1080p
100−110
100−110
Radeon HD 7990 and Radeon R9 280X have the same average FPS in Dota 2.
high / 1080p
45−50
45−50
ultra / 1080p
40−45
40−45
QHD / 1440p
27−30
27−30
4K / 2160p
14−16
14−16
low / 720p
80−85
80−85
medium / 1080p
45−50
45−50
Radeon HD 7990 and Radeon R9 280X have the same average FPS in Far Cry 5.
high / 1080p
60−65
60−65
ultra / 1080p
45−50
45−50
QHD / 1440p
27−30
27−30
4K / 2160p
27−30
27−30
low / 720p
180−190
180−190
medium / 1080p
110−120
110−120
Radeon HD 7990 and Radeon R9 280X have the same average FPS in Fortnite.
high / 1080p
60−65
60−65
ultra / 1080p
45−50
45−50
QHD / 1440p
30−35
30−35
4K / 2160p
24−27
24−27
low / 720p
100−110
100−110
medium / 1080p
65−70
65−70
Radeon HD 7990 and Radeon R9 280X have the same average FPS in Forza Horizon 4.
low / 768p
140−150
140−150
medium / 768p
120−130
120−130
high / 1080p
70−75
70−75
ultra / 1080p
30−35
30−35
QHD / 1440p
21−24
21−24
Radeon HD 7990 and Radeon R9 280X have the same average FPS in Grand Theft Auto V.
high / 1080p
24−27
24−27
ultra / 1080p
20−22
20−22
QHD / 1440p
16−18
16−18
4K / 2160p
8−9
8−9
low / 720p
65−70
65−70
medium / 1080p
30−35
30−35
Radeon HD 7990 and Radeon R9 280X have the same average FPS in Metro Exodus.
low / 768p
130−140
130−140
medium / 1080p
120−130
120−130
Radeon HD 7990 and Radeon R9 280X have the same average FPS in Minecraft.
ultra / 1080p
14−16
14−16
low / 720p
100−110
100−110
medium / 1080p
18−20
18−20
Radeon HD 7990 and Radeon R9 280X have the same average FPS in PLAYERUNKNOWN'S BATTLEGROUNDS.
high / 1080p
24−27
24−27
ultra / 1080p
16−18
16−18
QHD / 1440p
10−11
10−11
4K / 2160p
7−8
7−8
low / 720p
65−70
65−70
medium / 1080p
35−40
35−40
Radeon HD 7990 and Radeon R9 280X have the same average FPS in Red Dead Redemption 2.
low / 768p
130−140
130−140
medium / 768p
85−90
85−90
high / 1080p
45−50
45−50
ultra / 1080p
24−27
24−27
4K / 2160p
16−18
16−18
Radeon HD 7990 and Radeon R9 280X have the same average FPS in The Witcher 3: Wild Hunt.
low / 768p
90−95
90−95
medium / 768p
60−65
60−65
ultra / 1080p
50−55
50−55
high / 768p
60−65
60−65
Radeon HD 7990 and Radeon R9 280X have the same average FPS in World of Tanks.
Full Specs
Radeon HD 7990
Radeon R9 280X
Architecture
GCN 1.0
GCN
Code name
Malta
Thaiti XTL
Type
Desktop
Desktop
Release date
24 April 2013
8 October 2013
Pipelines
2048
2048
Core clock speed
950 MHz
Boost Clock
1000 MHz
1000 MHz
Transistor count
4,313 million
4,313 million
Manufacturing process technology
28 nm
28 nm
Texture fill rate
128.0
128.0
Floating-point performance
2x 4,096 gflops
4,096 gflops
Length
307 mm
275 mm
Memory bus width
384 Bit
384 Bit
Memory clock speed
6000 MHz
Memory bandwidth
288.0 GB/s
288 GB/s
Shared memory
-
DirectX
12 (11_1)
Shader Model
5.1
5.1
OpenGL
4.6
4.6
OpenCL
1.2
1.2
Vulkan
1.2.131
+
Monero / XMR (CryptoNight)
0.5 kh/s
FreeSync
+
Bus support
PCIe 3.0
HDMI
+
Bitcoin / BTC (SHA256)
459 Mh/s
494 Mh/s
Eyefinity
+
HD3D
+
TrueAudio
+
Design
reference
DisplayPort support
+
CrossFire
+
DDMA audio
+
Decred / DCR (Decred)
1.07 Gh/s
Ethereum / ETH (DaggerHashimoto)
44 Mh/s
14.42 Mh/s
Zcash / ZEC (Equihash)
285 Sol/s
AppAcceleration
+
LiquidVR
+
TressFX
+
UVD
+
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