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.

Overview

The Radeon HD 7990 is manufactured by AMD. It was released in April 24 2013. It features the GCN 1.0 architecture. The core clock ranges from 950 MHz to 1000 MHz. It has 2048 ×2 shading units. The thermal design power (TDP) is 375W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 5,566 points. Launch price was $999.

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.

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

Performance Per Dollar

Based on actual market prices and performance benchmarks.

Technical Analysis

Detailed breakdown of Radeon HD 7990 specifications and capabilities.

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Graphics Performance

The Radeon HD 7990 scores 5,566 in the G3D Mark benchmark (the standard measure of rasterization GPU performance), placing it in the Budget tier as a Legacy generation graphics card. It is built on the GCN 1.0 (2012−2020) architecture (codename: Malta), manufactured on a 28 nm process— smaller process nodes improve power efficiency and transistor density. It packs 2048 ×2 shader units (the primary compute units for rendering pixels), 128 ×2 TMUs (texture mapping units), and 32 ×2 ROPs (render output units that handle final pixel output). Raw FP32 compute power: 4.096 TFLOPS ×2 — this measures the theoretical peak floating-point performance. Boost clock reaches 1000 MHz from a base of 950 MHz.

Specification	Radeon HD 7990
G3D MarkPassMark 3D graphics benchmark score	5,566
ArchitectureGPU microarchitecture generation	GCN 1.0 (2012−2020)
CodenameInternal GPU die codename	Malta
Manufacturing ProcessFabrication node — smaller = more efficient	28 nm
Shader UnitsCore compute units for rendering/compute	2048 ×2
TMUsTexture Mapping Units — handle texture sampling	128 ×2
ROPsRender Output Units — final pixel/color blending	32 ×2
Boost ClockMaximum GPU frequency under load	1000 MHz
Base ClockGuaranteed minimum GPU frequency	950 MHz
Compute (FP32)Peak single-precision floating-point performance	4.096 TFLOPS ×2
Texture Fill RateTextures processed per second	128.0 ×2 GTexel/s
PCIe InterfaceCPU↔GPU data link generation	PCIe 3.0 x16
Transistor Count	4,313 million
Performance RankPosition in global GPU performance ranking	#412

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Video Memory (VRAM)

The Radeon HD 7990 is equipped with 3 GB of GDDR5 video memory connected via a 384-bit x2 memory bus, delivering 288 GB/s x2 of bandwidth. Memory operates at 8 Gbps effective speed.

Specification	Radeon HD 7990
VRAM SizeVideo memory capacity — more = better for high-res textures	3 GB
VRAM TypeMemory technology generation	GDDR5
Memory BusWidth of data path — wider = more bandwidth	384-bit x2
Memory SpeedEffective memory data rate	8 Gbps
BandwidthMaximum data throughput between GPU and VRAM	288 GB/s x2
L1 Cache	512 kB
L2 Cache	768 kB

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Advanced Features & APIs

The Radeon HD 7990 supports modern upscaling and frame generation technologies: FidelityFX Super Resolution — these can dramatically boost effective FPS by generating intermediate frames or upscaling from lower internal resolution. Graphics API support: DirectX 12 (11_1), Vulkan 1.2, OpenGL 4.6— latest API versions enable the most advanced rendering features like ray tracing and mesh shaders.

Specification	Radeon HD 7990
FSR Frame Generation	❌ Not Supported
AMD Fluid Motion Frames	❌ Not Supported
FidelityFX Super Resolution	✅ Supported
DirectXMicrosoft graphics API version	12 (11_1)
VulkanCross-platform graphics API	1.2
OpenGLLegacy graphics API	4.6
Compute APIGPGPU framework (CUDA/ROCm/OpenCL)	OpenCL 1.2
Multi-GPUSLI/CrossFire/NVLink support	CrossFire

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Display & Media

Display outputs: DVIx 0, Mini DisplayPortx 1 — supports up to 5 simultaneous displays. Hardware encoder: VCE 1.0, decoder: UVD 3.2— dedicated hardware for video encoding/decoding accelerates streaming, recording, and video playback. Supported codecs: H.264,MPEG-2,VC-1.

Specification	Radeon HD 7990
0 PortsNumber of 0 display connectors	DVIx
1 PortsNumber of 1 display connectors	Mini DisplayPortx
Max DisplaysMaximum simultaneously connected monitors	5
Hardware EncoderVideo encoding engine version	VCE 1.0
Hardware DecoderVideo decoding engine version	UVD 3.2
CodecsSupported video compression formats	H.264,MPEG-2,VC-1

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Power & Dimensions

The Radeon HD 7990 draws 375 Watt under load (TDP) — a 750W PSU minimum is recommended. Power connector: 2x 8-pin. Physical size: 305mm long, 111mm tall, occupying 2 expansion slots, weighing 1200g— verify your case has clearance before purchasing. Typical temperatures: 42 at idle, 85 under load.

Specification	Radeon HD 7990
TDPPower consumption under load	375 Watt
Recommended PSUMinimum power supply wattage	750W
Power ConnectorRequired PCIe power cable type	2x 8-pin
Card LengthGPU card length — check case clearance	305mm
Card Height	111mm
Slot WidthExpansion slots occupied	2-slot
Weight	1200g
Idle TemperatureTypical temperature at desktop idle	42
Load TemperatureTypical temperature under gaming load	85

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Value Analysis

At an average price of $999, the Radeon HD 7990 delivers 6 G3D Mark points per dollar. Overall performance ranking position: #412 among all indexed GPUs.

Specification	Radeon HD 7990
MSRPManufacturer's Suggested Retail Price	$999
Avg Price (30d)Average market price over the last 30 days	$999
Performance RankPosition in global GPU performance ranking	#412
Release Date	April 24 2013
Release Year	2013